Home / 22,471.12-31,009.94-12,399.66

Finding the Fourth Proportional to 22,471.12, 31,009.94 and 12,399.66

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Solution

The fourth proportional to 22,471.12, 31,009.94 and 12,399.66 is: 17,111.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,471.12 : 31,009.94 = 12,399.66 : x
  2. Step 2: Convert to fraction form
    22,471.12/31,009.94 = 12,399.66/x
  3. Step 3: Cross multiply
    22,471.12x = 31,009.94 × 12,399.66
  4. Step 4: Simplify right side
    22,471.12x = 384,512,712.62
  5. Step 5: Solve for x
    x = 384,512,712.62/22,471.12
  6. Step 6: Final answer
    x = 17,111.42

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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.