Home / 15,543.17-21,449.78-8,469.57

Finding the Fourth Proportional to 15,543.17, 21,449.78 and 8,469.57

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Solution

The fourth proportional to 15,543.17, 21,449.78 and 8,469.57 is: 11,688.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,543.17 : 21,449.78 = 8,469.57 : x
  2. Step 2: Convert to fraction form
    15,543.17/21,449.78 = 8,469.57/x
  3. Step 3: Cross multiply
    15,543.17x = 21,449.78 × 8,469.57
  4. Step 4: Simplify right side
    15,543.17x = 181,670,413.19
  5. Step 5: Solve for x
    x = 181,670,413.19/15,543.17
  6. Step 6: Final answer
    x = 11,688.12

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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.