Home / 20,139,335.10-30,209,002.65-18,123,795.90

Finding the Fourth Proportional to 20,139,335.10, 30,209,002.65 and 18,123,795.90

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Solution

The fourth proportional to 20,139,335.10, 30,209,002.65 and 18,123,795.90 is: 27,185,693.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139,335.10 : 30,209,002.65 = 18,123,795.90 : x
  2. Step 2: Convert to fraction form
    20,139,335.10/30,209,002.65 = 18,123,795.90/x
  3. Step 3: Cross multiply
    20,139,335.10x = 30,209,002.65 × 18,123,795.90
  4. Step 4: Simplify right side
    20,139,335.10x = 547,501,798,371,159.06
  5. Step 5: Solve for x
    x = 547,501,798,371,159.06/20,139,335.10
  6. Step 6: Final answer
    x = 27,185,693.85

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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.