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Finding the Fourth Proportional to 17,640.90, 26,472.33 and 10,990.46

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Solution

The fourth proportional to 17,640.90, 26,472.33 and 10,990.46 is: 16,492.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,640.90 : 26,472.33 = 10,990.46 : x
  2. Step 2: Convert to fraction form
    17,640.90/26,472.33 = 10,990.46/x
  3. Step 3: Cross multiply
    17,640.90x = 26,472.33 × 10,990.46
  4. Step 4: Simplify right side
    17,640.90x = 290,943,150.15
  5. Step 5: Solve for x
    x = 290,943,150.15/17,640.90
  6. Step 6: Final answer
    x = 16,492.53

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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.