Home / 20,981,305.44-28,955,095.08-11,688,870.24

Finding the Fourth Proportional to 20,981,305.44, 28,955,095.08 and 11,688,870.24

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Solution

The fourth proportional to 20,981,305.44, 28,955,095.08 and 11,688,870.24 is: 16,131,138.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,981,305.44 : 28,955,095.08 = 11,688,870.24 : x
  2. Step 2: Convert to fraction form
    20,981,305.44/28,955,095.08 = 11,688,870.24/x
  3. Step 3: Cross multiply
    20,981,305.44x = 28,955,095.08 × 11,688,870.24
  4. Step 4: Simplify right side
    20,981,305.44x = 338,452,349,176,982.38
  5. Step 5: Solve for x
    x = 338,452,349,176,982.38/20,981,305.44
  6. Step 6: Final answer
    x = 16,131,138.75

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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.