Home / 15,633.27-21,575.71-8,919.86

Finding the Fourth Proportional to 15,633.27, 21,575.71 and 8,919.86

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Solution

The fourth proportional to 15,633.27, 21,575.71 and 8,919.86 is: 12,310.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,633.27 : 21,575.71 = 8,919.86 : x
  2. Step 2: Convert to fraction form
    15,633.27/21,575.71 = 8,919.86/x
  3. Step 3: Cross multiply
    15,633.27x = 21,575.71 × 8,919.86
  4. Step 4: Simplify right side
    15,633.27x = 192,452,312.60
  5. Step 5: Solve for x
    x = 192,452,312.60/15,633.27
  6. Step 6: Final answer
    x = 12,310.43

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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.