Home / 18,498.72-25,528-10,115.20

Finding the Fourth Proportional to 18,498.72, 25,528 and 10,115.20

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Solution

The fourth proportional to 18,498.72, 25,528 and 10,115.20 is: 13,958.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,498.72 : 25,528 = 10,115.20 : x
  2. Step 2: Convert to fraction form
    18,498.72/25,528 = 10,115.20/x
  3. Step 3: Cross multiply
    18,498.72x = 25,528 × 10,115.20
  4. Step 4: Simplify right side
    18,498.72x = 258,220,825.60
  5. Step 5: Solve for x
    x = 258,220,825.60/18,498.72
  6. Step 6: Final answer
    x = 13,958.85

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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.