Home / 18,515.20-25,551.28-10,132.16

Finding the Fourth Proportional to 18,515.20, 25,551.28 and 10,132.16

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Solution

The fourth proportional to 18,515.20, 25,551.28 and 10,132.16 is: 13,982.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,515.20 : 25,551.28 = 10,132.16 : x
  2. Step 2: Convert to fraction form
    18,515.20/25,551.28 = 10,132.16/x
  3. Step 3: Cross multiply
    18,515.20x = 25,551.28 × 10,132.16
  4. Step 4: Simplify right side
    18,515.20x = 258,889,657.16
  5. Step 5: Solve for x
    x = 258,889,657.16/18,515.20
  6. Step 6: Final answer
    x = 13,982.55

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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.