Home / 18,887,631.70-28,331,447.55-6,109,428.10

Finding the Fourth Proportional to 18,887,631.70, 28,331,447.55 and 6,109,428.10

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Solution

The fourth proportional to 18,887,631.70, 28,331,447.55 and 6,109,428.10 is: 9,164,142.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,887,631.70 : 28,331,447.55 = 6,109,428.10 : x
  2. Step 2: Convert to fraction form
    18,887,631.70/28,331,447.55 = 6,109,428.10/x
  3. Step 3: Cross multiply
    18,887,631.70x = 28,331,447.55 × 6,109,428.10
  4. Step 4: Simplify right side
    18,887,631.70x = 173,088,941,775,646.16
  5. Step 5: Solve for x
    x = 173,088,941,775,646.16/18,887,631.70
  6. Step 6: Final answer
    x = 9,164,142.15

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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.