Home / 15,002.12-20,702.96-8,287.60

Finding the Fourth Proportional to 15,002.12, 20,702.96 and 8,287.60

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Solution

The fourth proportional to 15,002.12, 20,702.96 and 8,287.60 is: 11,436.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,002.12 : 20,702.96 = 8,287.60 : x
  2. Step 2: Convert to fraction form
    15,002.12/20,702.96 = 8,287.60/x
  3. Step 3: Cross multiply
    15,002.12x = 20,702.96 × 8,287.60
  4. Step 4: Simplify right side
    15,002.12x = 171,577,851.30
  5. Step 5: Solve for x
    x = 171,577,851.30/15,002.12
  6. Step 6: Final answer
    x = 11,436.91

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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.