Home / 21,531.52-29,701.34-13,560.04

Finding the Fourth Proportional to 21,531.52, 29,701.34 and 13,560.04

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Solution

The fourth proportional to 21,531.52, 29,701.34 and 13,560.04 is: 18,705.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,531.52 : 29,701.34 = 13,560.04 : x
  2. Step 2: Convert to fraction form
    21,531.52/29,701.34 = 13,560.04/x
  3. Step 3: Cross multiply
    21,531.52x = 29,701.34 × 13,560.04
  4. Step 4: Simplify right side
    21,531.52x = 402,751,358.45
  5. Step 5: Solve for x
    x = 402,751,358.45/21,531.52
  6. Step 6: Final answer
    x = 18,705.20

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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.