Home / 20,479,766.30-30,719,439.19-11,838,368.28

Finding the Fourth Proportional to 20,479,766.30, 30,719,439.19 and 11,838,368.28

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Solution

The fourth proportional to 20,479,766.30, 30,719,439.19 and 11,838,368.28 is: 17,757,430.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,479,766.30 : 30,719,439.19 = 11,838,368.28 : x
  2. Step 2: Convert to fraction form
    20,479,766.30/30,719,439.19 = 11,838,368.28/x
  3. Step 3: Cross multiply
    20,479,766.30x = 30,719,439.19 × 11,838,368.28
  4. Step 4: Simplify right side
    20,479,766.30x = 363,668,034,290,510
  5. Step 5: Solve for x
    x = 363,668,034,290,510/20,479,766.30
  6. Step 6: Final answer
    x = 17,757,430.87

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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.