Home / 15,951.20-22,012.62-9,899.19

Finding the Fourth Proportional to 15,951.20, 22,012.62 and 9,899.19

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Solution

The fourth proportional to 15,951.20, 22,012.62 and 9,899.19 is: 13,660.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,951.20 : 22,012.62 = 9,899.19 : x
  2. Step 2: Convert to fraction form
    15,951.20/22,012.62 = 9,899.19/x
  3. Step 3: Cross multiply
    15,951.20x = 22,012.62 × 9,899.19
  4. Step 4: Simplify right side
    15,951.20x = 217,907,107.78
  5. Step 5: Solve for x
    x = 217,907,107.78/15,951.20
  6. Step 6: Final answer
    x = 13,660.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.