Home / 25,149.32-34,707-15,079.40

Finding the Fourth Proportional to 25,149.32, 34,707 and 15,079.40

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Solution

The fourth proportional to 25,149.32, 34,707 and 15,079.40 is: 20,810.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,149.32 : 34,707 = 15,079.40 : x
  2. Step 2: Convert to fraction form
    25,149.32/34,707 = 15,079.40/x
  3. Step 3: Cross multiply
    25,149.32x = 34,707 × 15,079.40
  4. Step 4: Simplify right side
    25,149.32x = 523,360,735.80
  5. Step 5: Solve for x
    x = 523,360,735.80/25,149.32
  6. Step 6: Final answer
    x = 20,810.13

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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.