Home / 15,138,065.68-20,890,550.76-9,705,557.52

Finding the Fourth Proportional to 15,138,065.68, 20,890,550.76 and 9,705,557.52

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Solution

The fourth proportional to 15,138,065.68, 20,890,550.76 and 9,705,557.52 is: 13,393,682.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,138,065.68 : 20,890,550.76 = 9,705,557.52 : x
  2. Step 2: Convert to fraction form
    15,138,065.68/20,890,550.76 = 9,705,557.52/x
  3. Step 3: Cross multiply
    15,138,065.68x = 20,890,550.76 × 9,705,557.52
  4. Step 4: Simplify right side
    15,138,065.68x = 202,754,442,025,659.72
  5. Step 5: Solve for x
    x = 202,754,442,025,659.72/15,138,065.68
  6. Step 6: Final answer
    x = 13,393,682.28

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.