Home / 25,748.38-38,634.64-9,120.98

Finding the Fourth Proportional to 25,748.38, 38,634.64 and 9,120.98

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Solution

The fourth proportional to 25,748.38, 38,634.64 and 9,120.98 is: 13,685.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,748.38 : 38,634.64 = 9,120.98 : x
  2. Step 2: Convert to fraction form
    25,748.38/38,634.64 = 9,120.98/x
  3. Step 3: Cross multiply
    25,748.38x = 38,634.64 × 9,120.98
  4. Step 4: Simplify right side
    25,748.38x = 352,385,778.75
  5. Step 5: Solve for x
    x = 352,385,778.75/25,748.38
  6. Step 6: Final answer
    x = 13,685.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.