Home / 25,200.32-34,766.40-15,129.32

Finding the Fourth Proportional to 25,200.32, 34,766.40 and 15,129.32

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Solution

The fourth proportional to 25,200.32, 34,766.40 and 15,129.32 is: 20,872.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,200.32 : 34,766.40 = 15,129.32 : x
  2. Step 2: Convert to fraction form
    25,200.32/34,766.40 = 15,129.32/x
  3. Step 3: Cross multiply
    25,200.32x = 34,766.40 × 15,129.32
  4. Step 4: Simplify right side
    25,200.32x = 525,991,990.85
  5. Step 5: Solve for x
    x = 525,991,990.85/25,200.32
  6. Step 6: Final answer
    x = 20,872.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.