Home / 25,627.79-38,418.33-8,978.78

Finding the Fourth Proportional to 25,627.79, 38,418.33 and 8,978.78

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Solution

The fourth proportional to 25,627.79, 38,418.33 and 8,978.78 is: 13,459.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,627.79 : 38,418.33 = 8,978.78 : x
  2. Step 2: Convert to fraction form
    25,627.79/38,418.33 = 8,978.78/x
  3. Step 3: Cross multiply
    25,627.79x = 38,418.33 × 8,978.78
  4. Step 4: Simplify right side
    25,627.79x = 344,949,733.04
  5. Step 5: Solve for x
    x = 344,949,733.04/25,627.79
  6. Step 6: Final answer
    x = 13,459.99

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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.