Home / 18,220.38-25,143.78-10,153.86

Finding the Fourth Proportional to 18,220.38, 25,143.78 and 10,153.86

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Solution

The fourth proportional to 18,220.38, 25,143.78 and 10,153.86 is: 14,012.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,220.38 : 25,143.78 = 10,153.86 : x
  2. Step 2: Convert to fraction form
    18,220.38/25,143.78 = 10,153.86/x
  3. Step 3: Cross multiply
    18,220.38x = 25,143.78 × 10,153.86
  4. Step 4: Simplify right side
    18,220.38x = 255,306,337.22
  5. Step 5: Solve for x
    x = 255,306,337.22/18,220.38
  6. Step 6: Final answer
    x = 14,012.13

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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.