Home / 15,348.64-21,175.12-8,632.74

Finding the Fourth Proportional to 15,348.64, 21,175.12 and 8,632.74

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Solution

The fourth proportional to 15,348.64, 21,175.12 and 8,632.74 is: 11,909.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,348.64 : 21,175.12 = 8,632.74 : x
  2. Step 2: Convert to fraction form
    15,348.64/21,175.12 = 8,632.74/x
  3. Step 3: Cross multiply
    15,348.64x = 21,175.12 × 8,632.74
  4. Step 4: Simplify right side
    15,348.64x = 182,799,305.43
  5. Step 5: Solve for x
    x = 182,799,305.43/15,348.64
  6. Step 6: Final answer
    x = 11,909.80

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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.