Home / 12,988,475.20-19,489,711.20-5,416,206.40

Finding the Fourth Proportional to 12,988,475.20, 19,489,711.20 and 5,416,206.40

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Solution

The fourth proportional to 12,988,475.20, 19,489,711.20 and 5,416,206.40 is: 8,127,227.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988,475.20 : 19,489,711.20 = 5,416,206.40 : x
  2. Step 2: Convert to fraction form
    12,988,475.20/19,489,711.20 = 5,416,206.40/x
  3. Step 3: Cross multiply
    12,988,475.20x = 19,489,711.20 × 5,416,206.40
  4. Step 4: Simplify right side
    12,988,475.20x = 105,560,298,535,591.69
  5. Step 5: Solve for x
    x = 105,560,298,535,591.69/12,988,475.20
  6. Step 6: Final answer
    x = 8,127,227.94

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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.