Home / 13,312,990.27-18,368,755.10-9,181,700.83

Finding the Fourth Proportional to 13,312,990.27, 18,368,755.10 and 9,181,700.83

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Solution

The fourth proportional to 13,312,990.27, 18,368,755.10 and 9,181,700.83 is: 12,668,559.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,312,990.27 : 18,368,755.10 = 9,181,700.83 : x
  2. Step 2: Convert to fraction form
    13,312,990.27/18,368,755.10 = 9,181,700.83/x
  3. Step 3: Cross multiply
    13,312,990.27x = 18,368,755.10 × 9,181,700.83
  4. Step 4: Simplify right side
    13,312,990.27x = 168,656,413,855,892.97
  5. Step 5: Solve for x
    x = 168,656,413,855,892.97/13,312,990.27
  6. Step 6: Final answer
    x = 12,668,559.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.