Home / 25,520.28-38,281.50-7,989.72

Finding the Fourth Proportional to 25,520.28, 38,281.50 and 7,989.72

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Solution

The fourth proportional to 25,520.28, 38,281.50 and 7,989.72 is: 11,984.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,520.28 : 38,281.50 = 7,989.72 : x
  2. Step 2: Convert to fraction form
    25,520.28/38,281.50 = 7,989.72/x
  3. Step 3: Cross multiply
    25,520.28x = 38,281.50 × 7,989.72
  4. Step 4: Simplify right side
    25,520.28x = 305,858,466.18
  5. Step 5: Solve for x
    x = 305,858,466.18/25,520.28
  6. Step 6: Final answer
    x = 11,984.92

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Double scale
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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.