Home / 15,660.86-21,612.15-8,587.13

Finding the Fourth Proportional to 15,660.86, 21,612.15 and 8,587.13

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Solution

The fourth proportional to 15,660.86, 21,612.15 and 8,587.13 is: 11,850.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,660.86 : 21,612.15 = 8,587.13 : x
  2. Step 2: Convert to fraction form
    15,660.86/21,612.15 = 8,587.13/x
  3. Step 3: Cross multiply
    15,660.86x = 21,612.15 × 8,587.13
  4. Step 4: Simplify right side
    15,660.86x = 185,586,233.57
  5. Step 5: Solve for x
    x = 185,586,233.57/15,660.86
  6. Step 6: Final answer
    x = 11,850.33

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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.