Home / 19,115,655.20-28,689,812.40-7,764,250.40

Finding the Fourth Proportional to 19,115,655.20, 28,689,812.40 and 7,764,250.40

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Solution

The fourth proportional to 19,115,655.20, 28,689,812.40 and 7,764,250.40 is: 11,653,008.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,115,655.20 : 28,689,812.40 = 7,764,250.40 : x
  2. Step 2: Convert to fraction form
    19,115,655.20/28,689,812.40 = 7,764,250.40/x
  3. Step 3: Cross multiply
    19,115,655.20x = 28,689,812.40 × 7,764,250.40
  4. Step 4: Simplify right side
    19,115,655.20x = 222,754,887,402,624.97
  5. Step 5: Solve for x
    x = 222,754,887,402,624.97/19,115,655.20
  6. Step 6: Final answer
    x = 11,653,008.23

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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.