Home / 21,659.59-29,884.30-13,154.59

Finding the Fourth Proportional to 21,659.59, 29,884.30 and 13,154.59

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Solution

The fourth proportional to 21,659.59, 29,884.30 and 13,154.59 is: 18,149.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,659.59 : 29,884.30 = 13,154.59 : x
  2. Step 2: Convert to fraction form
    21,659.59/29,884.30 = 13,154.59/x
  3. Step 3: Cross multiply
    21,659.59x = 29,884.30 × 13,154.59
  4. Step 4: Simplify right side
    21,659.59x = 393,115,713.94
  5. Step 5: Solve for x
    x = 393,115,713.94/21,659.59
  6. Step 6: Final answer
    x = 18,149.73

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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.