Home / 20,521,249.20-30,761,569.80-9,719,564.40

Finding the Fourth Proportional to 20,521,249.20, 30,761,569.80 and 9,719,564.40

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Solution

The fourth proportional to 20,521,249.20, 30,761,569.80 and 9,719,564.40 is: 14,569,729.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,521,249.20 : 30,761,569.80 = 9,719,564.40 : x
  2. Step 2: Convert to fraction form
    20,521,249.20/30,761,569.80 = 9,719,564.40/x
  3. Step 3: Cross multiply
    20,521,249.20x = 30,761,569.80 × 9,719,564.40
  4. Step 4: Simplify right side
    20,521,249.20x = 298,989,058,716,195.12
  5. Step 5: Solve for x
    x = 298,989,058,716,195.12/20,521,249.20
  6. Step 6: Final answer
    x = 14,569,729.93

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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.