Home / 22,470.55-31,009.17-12,399.09

Finding the Fourth Proportional to 22,470.55, 31,009.17 and 12,399.09

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Solution

The fourth proportional to 22,470.55, 31,009.17 and 12,399.09 is: 17,110.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,470.55 : 31,009.17 = 12,399.09 : x
  2. Step 2: Convert to fraction form
    22,470.55/31,009.17 = 12,399.09/x
  3. Step 3: Cross multiply
    22,470.55x = 31,009.17 × 12,399.09
  4. Step 4: Simplify right side
    22,470.55x = 384,485,489.66
  5. Step 5: Solve for x
    x = 384,485,489.66/22,470.55
  6. Step 6: Final answer
    x = 17,110.64

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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.