Home / 19,721.55-29,549.52-13,865.88

Finding the Fourth Proportional to 19,721.55, 29,549.52 and 13,865.88

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Solution

The fourth proportional to 19,721.55, 29,549.52 and 13,865.88 is: 20,775.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,721.55 : 29,549.52 = 13,865.88 : x
  2. Step 2: Convert to fraction form
    19,721.55/29,549.52 = 13,865.88/x
  3. Step 3: Cross multiply
    19,721.55x = 29,549.52 × 13,865.88
  4. Step 4: Simplify right side
    19,721.55x = 409,730,098.38
  5. Step 5: Solve for x
    x = 409,730,098.38/19,721.55
  6. Step 6: Final answer
    x = 20,775.76

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1.5x scale

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.