Home / 15,447.29-21,317.31-8,373.69

Finding the Fourth Proportional to 15,447.29, 21,317.31 and 8,373.69

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Solution

The fourth proportional to 15,447.29, 21,317.31 and 8,373.69 is: 11,555.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,447.29 : 21,317.31 = 8,373.69 : x
  2. Step 2: Convert to fraction form
    15,447.29/21,317.31 = 8,373.69/x
  3. Step 3: Cross multiply
    15,447.29x = 21,317.31 × 8,373.69
  4. Step 4: Simplify right side
    15,447.29x = 178,504,545.57
  5. Step 5: Solve for x
    x = 178,504,545.57/15,447.29
  6. Step 6: Final answer
    x = 11,555.72

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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.