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Finding the Fourth Proportional to 18,683,513.60, 28,025,270.40 and 18,683,513.60

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Solution

The fourth proportional to 18,683,513.60, 28,025,270.40 and 18,683,513.60 is: 28,025,270.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683,513.60 : 28,025,270.40 = 18,683,513.60 : x
  2. Step 2: Convert to fraction form
    18,683,513.60/28,025,270.40 = 18,683,513.60/x
  3. Step 3: Cross multiply
    18,683,513.60x = 28,025,270.40 × 18,683,513.60
  4. Step 4: Simplify right side
    18,683,513.60x = 523,610,520,662,077.44
  5. Step 5: Solve for x
    x = 523,610,520,662,077.44/18,683,513.60
  6. Step 6: Final answer
    x = 28,025,270.40

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.