Home / 15,704.32-21,672.52-8,630.72

Finding the Fourth Proportional to 15,704.32, 21,672.52 and 8,630.72

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Solution

The fourth proportional to 15,704.32, 21,672.52 and 8,630.72 is: 11,910.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,704.32 : 21,672.52 = 8,630.72 : x
  2. Step 2: Convert to fraction form
    15,704.32/21,672.52 = 8,630.72/x
  3. Step 3: Cross multiply
    15,704.32x = 21,672.52 × 8,630.72
  4. Step 4: Simplify right side
    15,704.32x = 187,049,451.81
  5. Step 5: Solve for x
    x = 187,049,451.81/15,704.32
  6. Step 6: Final answer
    x = 11,910.70

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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.