Home / 25,518.90-38,286.05-7,988.88

Finding the Fourth Proportional to 25,518.90, 38,286.05 and 7,988.88

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Solution

The fourth proportional to 25,518.90, 38,286.05 and 7,988.88 is: 11,985.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,518.90 : 38,286.05 = 7,988.88 : x
  2. Step 2: Convert to fraction form
    25,518.90/38,286.05 = 7,988.88/x
  3. Step 3: Cross multiply
    25,518.90x = 38,286.05 × 7,988.88
  4. Step 4: Simplify right side
    25,518.90x = 305,862,619.18
  5. Step 5: Solve for x
    x = 305,862,619.18/25,518.90
  6. Step 6: Final answer
    x = 11,985.73

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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.