Home / 25,977.20-38,908.20-10,386.80

Finding the Fourth Proportional to 25,977.20, 38,908.20 and 10,386.80

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Solution

The fourth proportional to 25,977.20, 38,908.20 and 10,386.80 is: 15,557.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,977.20 : 38,908.20 = 10,386.80 : x
  2. Step 2: Convert to fraction form
    25,977.20/38,908.20 = 10,386.80/x
  3. Step 3: Cross multiply
    25,977.20x = 38,908.20 × 10,386.80
  4. Step 4: Simplify right side
    25,977.20x = 404,131,691.76
  5. Step 5: Solve for x
    x = 404,131,691.76/25,977.20
  6. Step 6: Final answer
    x = 15,557.17

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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.