Home / 20,689,684.20-31,034,526.30-18,417,773.93

Finding the Fourth Proportional to 20,689,684.20, 31,034,526.30 and 18,417,773.93

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Solution

The fourth proportional to 20,689,684.20, 31,034,526.30 and 18,417,773.93 is: 27,626,660.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,689,684.20 : 31,034,526.30 = 18,417,773.93 : x
  2. Step 2: Convert to fraction form
    20,689,684.20/31,034,526.30 = 18,417,773.93/x
  3. Step 3: Cross multiply
    20,689,684.20x = 31,034,526.30 × 18,417,773.93
  4. Step 4: Simplify right side
    20,689,684.20x = 571,586,889,418,039.38
  5. Step 5: Solve for x
    x = 571,586,889,418,039.38/20,689,684.20
  6. Step 6: Final answer
    x = 27,626,660.90

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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.