Home / 15,215.15-20,996.51-8,500.82

Finding the Fourth Proportional to 15,215.15, 20,996.51 and 8,500.82

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Solution

The fourth proportional to 15,215.15, 20,996.51 and 8,500.82 is: 11,730.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215.15 : 20,996.51 = 8,500.82 : x
  2. Step 2: Convert to fraction form
    15,215.15/20,996.51 = 8,500.82/x
  3. Step 3: Cross multiply
    15,215.15x = 20,996.51 × 8,500.82
  4. Step 4: Simplify right side
    15,215.15x = 178,487,552.14
  5. Step 5: Solve for x
    x = 178,487,552.14/15,215.15
  6. Step 6: Final answer
    x = 11,730.91

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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.