Home / 18,190,243.20-27,285,364.80-10,915,406.40

Finding the Fourth Proportional to 18,190,243.20, 27,285,364.80 and 10,915,406.40

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Solution

The fourth proportional to 18,190,243.20, 27,285,364.80 and 10,915,406.40 is: 16,373,109.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,190,243.20 : 27,285,364.80 = 10,915,406.40 : x
  2. Step 2: Convert to fraction form
    18,190,243.20/27,285,364.80 = 10,915,406.40/x
  3. Step 3: Cross multiply
    18,190,243.20x = 27,285,364.80 × 10,915,406.40
  4. Step 4: Simplify right side
    18,190,243.20x = 297,830,845,564,254.75
  5. Step 5: Solve for x
    x = 297,830,845,564,254.75/18,190,243.20
  6. Step 6: Final answer
    x = 16,373,109.60

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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.