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Finding the Fourth Proportional to 25,919.92, 38,880.48 and 9,281.10

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Solution

The fourth proportional to 25,919.92, 38,880.48 and 9,281.10 is: 13,921.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,919.92 : 38,880.48 = 9,281.10 : x
  2. Step 2: Convert to fraction form
    25,919.92/38,880.48 = 9,281.10/x
  3. Step 3: Cross multiply
    25,919.92x = 38,880.48 × 9,281.10
  4. Step 4: Simplify right side
    25,919.92x = 360,853,622.93
  5. Step 5: Solve for x
    x = 360,853,622.93/25,919.92
  6. Step 6: Final answer
    x = 13,921.86

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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.