Home / 25,811.20-38,686.56-11,931.04

Finding the Fourth Proportional to 25,811.20, 38,686.56 and 11,931.04

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Solution

The fourth proportional to 25,811.20, 38,686.56 and 11,931.04 is: 17,882.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,811.20 : 38,686.56 = 11,931.04 : x
  2. Step 2: Convert to fraction form
    25,811.20/38,686.56 = 11,931.04/x
  3. Step 3: Cross multiply
    25,811.20x = 38,686.56 × 11,931.04
  4. Step 4: Simplify right side
    25,811.20x = 461,570,894.82
  5. Step 5: Solve for x
    x = 461,570,894.82/25,811.20
  6. Step 6: Final answer
    x = 17,882.58

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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.