Home / 15,171.91-20,937.36-8,799.82

Finding the Fourth Proportional to 15,171.91, 20,937.36 and 8,799.82

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Solution

The fourth proportional to 15,171.91, 20,937.36 and 8,799.82 is: 12,143.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,171.91 : 20,937.36 = 8,799.82 : x
  2. Step 2: Convert to fraction form
    15,171.91/20,937.36 = 8,799.82/x
  3. Step 3: Cross multiply
    15,171.91x = 20,937.36 × 8,799.82
  4. Step 4: Simplify right side
    15,171.91x = 184,244,999.28
  5. Step 5: Solve for x
    x = 184,244,999.28/15,171.91
  6. Step 6: Final answer
    x = 12,143.82

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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.