Home / 15,158.26-20,915.62-8,443.72

Finding the Fourth Proportional to 15,158.26, 20,915.62 and 8,443.72

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Solution

The fourth proportional to 15,158.26, 20,915.62 and 8,443.72 is: 11,650.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,158.26 : 20,915.62 = 8,443.72 : x
  2. Step 2: Convert to fraction form
    15,158.26/20,915.62 = 8,443.72/x
  3. Step 3: Cross multiply
    15,158.26x = 20,915.62 × 8,443.72
  4. Step 4: Simplify right side
    15,158.26x = 176,605,623.32
  5. Step 5: Solve for x
    x = 176,605,623.32/15,158.26
  6. Step 6: Final answer
    x = 11,650.79

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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.