Home / 21,302.52-29,397.42-12,355.20

Finding the Fourth Proportional to 21,302.52, 29,397.42 and 12,355.20

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Solution

The fourth proportional to 21,302.52, 29,397.42 and 12,355.20 is: 17,050.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,302.52 : 29,397.42 = 12,355.20 : x
  2. Step 2: Convert to fraction form
    21,302.52/29,397.42 = 12,355.20/x
  3. Step 3: Cross multiply
    21,302.52x = 29,397.42 × 12,355.20
  4. Step 4: Simplify right side
    21,302.52x = 363,211,003.58
  5. Step 5: Solve for x
    x = 363,211,003.58/21,302.52
  6. Step 6: Final answer
    x = 17,050.14

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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.