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Finding the Fourth Proportional to 17,079.20, 25,640.40 and 15,916.40

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Solution

The fourth proportional to 17,079.20, 25,640.40 and 15,916.40 is: 23,894.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,079.20 : 25,640.40 = 15,916.40 : x
  2. Step 2: Convert to fraction form
    17,079.20/25,640.40 = 15,916.40/x
  3. Step 3: Cross multiply
    17,079.20x = 25,640.40 × 15,916.40
  4. Step 4: Simplify right side
    17,079.20x = 408,102,862.56
  5. Step 5: Solve for x
    x = 408,102,862.56/17,079.20
  6. Step 6: Final answer
    x = 23,894.73

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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.