Home / 15,543.07-21,449.13-8,469.34

Finding the Fourth Proportional to 15,543.07, 21,449.13 and 8,469.34

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Solution

The fourth proportional to 15,543.07, 21,449.13 and 8,469.34 is: 11,687.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,543.07 : 21,449.13 = 8,469.34 : x
  2. Step 2: Convert to fraction form
    15,543.07/21,449.13 = 8,469.34/x
  3. Step 3: Cross multiply
    15,543.07x = 21,449.13 × 8,469.34
  4. Step 4: Simplify right side
    15,543.07x = 181,659,974.67
  5. Step 5: Solve for x
    x = 181,659,974.67/15,543.07
  6. Step 6: Final answer
    x = 11,687.52

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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.