Home / 15,229.96-21,020.07-9,181.29

Finding the Fourth Proportional to 15,229.96, 21,020.07 and 9,181.29

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Solution

The fourth proportional to 15,229.96, 21,020.07 and 9,181.29 is: 12,671.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,229.96 : 21,020.07 = 9,181.29 : x
  2. Step 2: Convert to fraction form
    15,229.96/21,020.07 = 9,181.29/x
  3. Step 3: Cross multiply
    15,229.96x = 21,020.07 × 9,181.29
  4. Step 4: Simplify right side
    15,229.96x = 192,991,358.49
  5. Step 5: Solve for x
    x = 192,991,358.49/15,229.96
  6. Step 6: Final answer
    x = 12,671.82

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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.