Home / 15,663.58-21,617.12-8,591.38

Finding the Fourth Proportional to 15,663.58, 21,617.12 and 8,591.38

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Solution

The fourth proportional to 15,663.58, 21,617.12 and 8,591.38 is: 11,856.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,663.58 : 21,617.12 = 8,591.38 : x
  2. Step 2: Convert to fraction form
    15,663.58/21,617.12 = 8,591.38/x
  3. Step 3: Cross multiply
    15,663.58x = 21,617.12 × 8,591.38
  4. Step 4: Simplify right side
    15,663.58x = 185,720,859.86
  5. Step 5: Solve for x
    x = 185,720,859.86/15,663.58
  6. Step 6: Final answer
    x = 11,856.86

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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.