Home / 21,565.88-29,759.32-12,132.62

Finding the Fourth Proportional to 21,565.88, 29,759.32 and 12,132.62

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Solution

The fourth proportional to 21,565.88, 29,759.32 and 12,132.62 is: 16,742.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,565.88 : 29,759.32 = 12,132.62 : x
  2. Step 2: Convert to fraction form
    21,565.88/29,759.32 = 12,132.62/x
  3. Step 3: Cross multiply
    21,565.88x = 29,759.32 × 12,132.62
  4. Step 4: Simplify right side
    21,565.88x = 361,058,521.02
  5. Step 5: Solve for x
    x = 361,058,521.02/21,565.88
  6. Step 6: Final answer
    x = 16,742.12

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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.