Home / 15,508.20-21,402.18-8,791.32

Finding the Fourth Proportional to 15,508.20, 21,402.18 and 8,791.32

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Solution

The fourth proportional to 15,508.20, 21,402.18 and 8,791.32 is: 12,132.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,508.20 : 21,402.18 = 8,791.32 : x
  2. Step 2: Convert to fraction form
    15,508.20/21,402.18 = 8,791.32/x
  3. Step 3: Cross multiply
    15,508.20x = 21,402.18 × 8,791.32
  4. Step 4: Simplify right side
    15,508.20x = 188,153,413.08
  5. Step 5: Solve for x
    x = 188,153,413.08/15,508.20
  6. Step 6: Final answer
    x = 12,132.51

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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.