Home / 18,213.95-25,135.17-10,147.70

Finding the Fourth Proportional to 18,213.95, 25,135.17 and 10,147.70

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Solution

The fourth proportional to 18,213.95, 25,135.17 and 10,147.70 is: 14,003.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,213.95 : 25,135.17 = 10,147.70 : x
  2. Step 2: Convert to fraction form
    18,213.95/25,135.17 = 10,147.70/x
  3. Step 3: Cross multiply
    18,213.95x = 25,135.17 × 10,147.70
  4. Step 4: Simplify right side
    18,213.95x = 255,064,038.93
  5. Step 5: Solve for x
    x = 255,064,038.93/18,213.95
  6. Step 6: Final answer
    x = 14,003.78

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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.