Home / 15,543.18-21,449.57-8,469.65

Finding the Fourth Proportional to 15,543.18, 21,449.57 and 8,469.65

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Solution

The fourth proportional to 15,543.18, 21,449.57 and 8,469.65 is: 11,688.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,543.18 : 21,449.57 = 8,469.65 : x
  2. Step 2: Convert to fraction form
    15,543.18/21,449.57 = 8,469.65/x
  3. Step 3: Cross multiply
    15,543.18x = 21,449.57 × 8,469.65
  4. Step 4: Simplify right side
    15,543.18x = 181,670,350.55
  5. Step 5: Solve for x
    x = 181,670,350.55/15,543.18
  6. Step 6: Final answer
    x = 11,688.11

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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.