Home / 21,177.32-31,772.90-15,249.35

Finding the Fourth Proportional to 21,177.32, 31,772.90 and 15,249.35

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Solution

The fourth proportional to 21,177.32, 31,772.90 and 15,249.35 is: 22,879.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,177.32 : 31,772.90 = 15,249.35 : x
  2. Step 2: Convert to fraction form
    21,177.32/31,772.90 = 15,249.35/x
  3. Step 3: Cross multiply
    21,177.32x = 31,772.90 × 15,249.35
  4. Step 4: Simplify right side
    21,177.32x = 484,516,190.17
  5. Step 5: Solve for x
    x = 484,516,190.17/21,177.32
  6. Step 6: Final answer
    x = 22,879.01

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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.