Home / 21,116.48-29,135.76-13,462.88

Finding the Fourth Proportional to 21,116.48, 29,135.76 and 13,462.88

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Solution

The fourth proportional to 21,116.48, 29,135.76 and 13,462.88 is: 18,575.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,116.48 : 29,135.76 = 13,462.88 : x
  2. Step 2: Convert to fraction form
    21,116.48/29,135.76 = 13,462.88/x
  3. Step 3: Cross multiply
    21,116.48x = 29,135.76 × 13,462.88
  4. Step 4: Simplify right side
    21,116.48x = 392,251,240.59
  5. Step 5: Solve for x
    x = 392,251,240.59/21,116.48
  6. Step 6: Final answer
    x = 18,575.60

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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.