Home / 21,615.92-29,824.89-13,117.85

Finding the Fourth Proportional to 21,615.92, 29,824.89 and 13,117.85

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Solution

The fourth proportional to 21,615.92, 29,824.89 and 13,117.85 is: 18,099.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,615.92 : 29,824.89 = 13,117.85 : x
  2. Step 2: Convert to fraction form
    21,615.92/29,824.89 = 13,117.85/x
  3. Step 3: Cross multiply
    21,615.92x = 29,824.89 × 13,117.85
  4. Step 4: Simplify right side
    21,615.92x = 391,238,400.49
  5. Step 5: Solve for x
    x = 391,238,400.49/21,615.92
  6. Step 6: Final answer
    x = 18,099.55

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1.5x scale

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.