Home / 18,720,935.10-28,081,402.65-9,142,458.30

Finding the Fourth Proportional to 18,720,935.10, 28,081,402.65 and 9,142,458.30

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Solution

The fourth proportional to 18,720,935.10, 28,081,402.65 and 9,142,458.30 is: 13,713,687.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,720,935.10 : 28,081,402.65 = 9,142,458.30 : x
  2. Step 2: Convert to fraction form
    18,720,935.10/28,081,402.65 = 9,142,458.30/x
  3. Step 3: Cross multiply
    18,720,935.10x = 28,081,402.65 × 9,142,458.30
  4. Step 4: Simplify right side
    18,720,935.10x = 256,733,052,733,134.50
  5. Step 5: Solve for x
    x = 256,733,052,733,134.50/18,720,935.10
  6. Step 6: Final answer
    x = 13,713,687.45

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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.