Home / 18,255.20-25,192.16-9,871.70

Finding the Fourth Proportional to 18,255.20, 25,192.16 and 9,871.70

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Solution

The fourth proportional to 18,255.20, 25,192.16 and 9,871.70 is: 13,622.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,255.20 : 25,192.16 = 9,871.70 : x
  2. Step 2: Convert to fraction form
    18,255.20/25,192.16 = 9,871.70/x
  3. Step 3: Cross multiply
    18,255.20x = 25,192.16 × 9,871.70
  4. Step 4: Simplify right side
    18,255.20x = 248,689,270.55
  5. Step 5: Solve for x
    x = 248,689,270.55/18,255.20
  6. Step 6: Final answer
    x = 13,622.93

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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.