Home / 15,104.28-20,839.59-9,131.61

Finding the Fourth Proportional to 15,104.28, 20,839.59 and 9,131.61

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Solution

The fourth proportional to 15,104.28, 20,839.59 and 9,131.61 is: 12,599.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,104.28 : 20,839.59 = 9,131.61 : x
  2. Step 2: Convert to fraction form
    15,104.28/20,839.59 = 9,131.61/x
  3. Step 3: Cross multiply
    15,104.28x = 20,839.59 × 9,131.61
  4. Step 4: Simplify right side
    15,104.28x = 190,299,008.44
  5. Step 5: Solve for x
    x = 190,299,008.44/15,104.28
  6. Step 6: Final answer
    x = 12,599.01

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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.