Home / 17,139.30-25,718.55-7,276.90

Finding the Fourth Proportional to 17,139.30, 25,718.55 and 7,276.90

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Solution

The fourth proportional to 17,139.30, 25,718.55 and 7,276.90 is: 10,919.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,139.30 : 25,718.55 = 7,276.90 : x
  2. Step 2: Convert to fraction form
    17,139.30/25,718.55 = 7,276.90/x
  3. Step 3: Cross multiply
    17,139.30x = 25,718.55 × 7,276.90
  4. Step 4: Simplify right side
    17,139.30x = 187,151,316.50
  5. Step 5: Solve for x
    x = 187,151,316.50/17,139.30
  6. Step 6: Final answer
    x = 10,919.43

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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.