Home / 25,518.11-38,276.54-17,990.57

Finding the Fourth Proportional to 25,518.11, 38,276.54 and 17,990.57

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Solution

The fourth proportional to 25,518.11, 38,276.54 and 17,990.57 is: 26,985.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,518.11 : 38,276.54 = 17,990.57 : x
  2. Step 2: Convert to fraction form
    25,518.11/38,276.54 = 17,990.57/x
  3. Step 3: Cross multiply
    25,518.11x = 38,276.54 × 17,990.57
  4. Step 4: Simplify right side
    25,518.11x = 688,616,912.90
  5. Step 5: Solve for x
    x = 688,616,912.90/25,518.11
  6. Step 6: Final answer
    x = 26,985.43

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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.