Home / 15,425.15-21,286.91-8,710.88

Finding the Fourth Proportional to 15,425.15, 21,286.91 and 8,710.88

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Solution

The fourth proportional to 15,425.15, 21,286.91 and 8,710.88 is: 12,021.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,425.15 : 21,286.91 = 8,710.88 : x
  2. Step 2: Convert to fraction form
    15,425.15/21,286.91 = 8,710.88/x
  3. Step 3: Cross multiply
    15,425.15x = 21,286.91 × 8,710.88
  4. Step 4: Simplify right side
    15,425.15x = 185,427,633.92
  5. Step 5: Solve for x
    x = 185,427,633.92/15,425.15
  6. Step 6: Final answer
    x = 12,021.13

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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.