Home / 15,589.32-21,512.22-8,515.72

Finding the Fourth Proportional to 15,589.32, 21,512.22 and 8,515.72

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Solution

The fourth proportional to 15,589.32, 21,512.22 and 8,515.72 is: 11,751.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,589.32 : 21,512.22 = 8,515.72 : x
  2. Step 2: Convert to fraction form
    15,589.32/21,512.22 = 8,515.72/x
  3. Step 3: Cross multiply
    15,589.32x = 21,512.22 × 8,515.72
  4. Step 4: Simplify right side
    15,589.32x = 183,192,042.10
  5. Step 5: Solve for x
    x = 183,192,042.10/15,589.32
  6. Step 6: Final answer
    x = 11,751.12

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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.