Home / 18,469.28-25,487.70-10,085.78

Finding the Fourth Proportional to 18,469.28, 25,487.70 and 10,085.78

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Solution

The fourth proportional to 18,469.28, 25,487.70 and 10,085.78 is: 13,918.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,469.28 : 25,487.70 = 10,085.78 : x
  2. Step 2: Convert to fraction form
    18,469.28/25,487.70 = 10,085.78/x
  3. Step 3: Cross multiply
    18,469.28x = 25,487.70 × 10,085.78
  4. Step 4: Simplify right side
    18,469.28x = 257,063,334.91
  5. Step 5: Solve for x
    x = 257,063,334.91/18,469.28
  6. Step 6: Final answer
    x = 13,918.43

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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.