Home / 20,759,591.28-31,145,068.08-9,985,904.40

Finding the Fourth Proportional to 20,759,591.28, 31,145,068.08 and 9,985,904.40

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Solution

The fourth proportional to 20,759,591.28, 31,145,068.08 and 9,985,904.40 is: 14,981,589.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,759,591.28 : 31,145,068.08 = 9,985,904.40 : x
  2. Step 2: Convert to fraction form
    20,759,591.28/31,145,068.08 = 9,985,904.40/x
  3. Step 3: Cross multiply
    20,759,591.28x = 31,145,068.08 × 9,985,904.40
  4. Step 4: Simplify right side
    20,759,591.28x = 311,011,672,378,371.56
  5. Step 5: Solve for x
    x = 311,011,672,378,371.56/20,759,591.28
  6. Step 6: Final answer
    x = 14,981,589.39

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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.