Home / 12,691.02-17,515.44-7,312.41

Finding the Fourth Proportional to 12,691.02, 17,515.44 and 7,312.41

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Solution

The fourth proportional to 12,691.02, 17,515.44 and 7,312.41 is: 10,092.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691.02 : 17,515.44 = 7,312.41 : x
  2. Step 2: Convert to fraction form
    12,691.02/17,515.44 = 7,312.41/x
  3. Step 3: Cross multiply
    12,691.02x = 17,515.44 × 7,312.41
  4. Step 4: Simplify right side
    12,691.02x = 128,080,078.61
  5. Step 5: Solve for x
    x = 128,080,078.61/12,691.02
  6. Step 6: Final answer
    x = 10,092.18

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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.