Home / 18,684,640.60-28,026,960.90-15,661,331.80

Finding the Fourth Proportional to 18,684,640.60, 28,026,960.90 and 15,661,331.80

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Solution

The fourth proportional to 18,684,640.60, 28,026,960.90 and 15,661,331.80 is: 23,491,997.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,684,640.60 : 28,026,960.90 = 15,661,331.80 : x
  2. Step 2: Convert to fraction form
    18,684,640.60/28,026,960.90 = 15,661,331.80/x
  3. Step 3: Cross multiply
    18,684,640.60x = 28,026,960.90 × 15,661,331.80
  4. Step 4: Simplify right side
    18,684,640.60x = 438,939,534,000,526.62
  5. Step 5: Solve for x
    x = 438,939,534,000,526.62/18,684,640.60
  6. Step 6: Final answer
    x = 23,491,997.70

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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.