Home / 25,891.95-38,838.79-7,172.18

Finding the Fourth Proportional to 25,891.95, 38,838.79 and 7,172.18

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Solution

The fourth proportional to 25,891.95, 38,838.79 and 7,172.18 is: 10,758.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,891.95 : 38,838.79 = 7,172.18 : x
  2. Step 2: Convert to fraction form
    25,891.95/38,838.79 = 7,172.18/x
  3. Step 3: Cross multiply
    25,891.95x = 38,838.79 × 7,172.18
  4. Step 4: Simplify right side
    25,891.95x = 278,558,753.28
  5. Step 5: Solve for x
    x = 278,558,753.28/25,891.95
  6. Step 6: Final answer
    x = 10,758.51

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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.