Home / 15,479.04-21,344.92-9,190.20

Finding the Fourth Proportional to 15,479.04, 21,344.92 and 9,190.20

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Solution

The fourth proportional to 15,479.04, 21,344.92 and 9,190.20 is: 12,672.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,479.04 : 21,344.92 = 9,190.20 : x
  2. Step 2: Convert to fraction form
    15,479.04/21,344.92 = 9,190.20/x
  3. Step 3: Cross multiply
    15,479.04x = 21,344.92 × 9,190.20
  4. Step 4: Simplify right side
    15,479.04x = 196,164,083.78
  5. Step 5: Solve for x
    x = 196,164,083.78/15,479.04
  6. Step 6: Final answer
    x = 12,672.88

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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.