Home / 18,348.28-25,320.72-9,964.78

Finding the Fourth Proportional to 18,348.28, 25,320.72 and 9,964.78

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Solution

The fourth proportional to 18,348.28, 25,320.72 and 9,964.78 is: 13,751.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,348.28 : 25,320.72 = 9,964.78 : x
  2. Step 2: Convert to fraction form
    18,348.28/25,320.72 = 9,964.78/x
  3. Step 3: Cross multiply
    18,348.28x = 25,320.72 × 9,964.78
  4. Step 4: Simplify right side
    18,348.28x = 252,315,404.24
  5. Step 5: Solve for x
    x = 252,315,404.24/18,348.28
  6. Step 6: Final answer
    x = 13,751.45

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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.