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Finding the Fourth Proportional to 18,683.64, 28,024.38 and 6,845.40

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Solution

The fourth proportional to 18,683.64, 28,024.38 and 6,845.40 is: 10,267.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683.64 : 28,024.38 = 6,845.40 : x
  2. Step 2: Convert to fraction form
    18,683.64/28,024.38 = 6,845.40/x
  3. Step 3: Cross multiply
    18,683.64x = 28,024.38 × 6,845.40
  4. Step 4: Simplify right side
    18,683.64x = 191,838,090.85
  5. Step 5: Solve for x
    x = 191,838,090.85/18,683.64
  6. Step 6: Final answer
    x = 10,267.70

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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.