Home / 25,639.12-38,465.28-8,771.92

Finding the Fourth Proportional to 25,639.12, 38,465.28 and 8,771.92

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Solution

The fourth proportional to 25,639.12, 38,465.28 and 8,771.92 is: 13,160.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,639.12 : 38,465.28 = 8,771.92 : x
  2. Step 2: Convert to fraction form
    25,639.12/38,465.28 = 8,771.92/x
  3. Step 3: Cross multiply
    25,639.12x = 38,465.28 × 8,771.92
  4. Step 4: Simplify right side
    25,639.12x = 337,414,358.94
  5. Step 5: Solve for x
    x = 337,414,358.94/25,639.12
  6. Step 6: Final answer
    x = 13,160.14

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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.