Home / 22,939.64-31,660.23-12,872.15

Finding the Fourth Proportional to 22,939.64, 31,660.23 and 12,872.15

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Solution

The fourth proportional to 22,939.64, 31,660.23 and 12,872.15 is: 17,765.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,939.64 : 31,660.23 = 12,872.15 : x
  2. Step 2: Convert to fraction form
    22,939.64/31,660.23 = 12,872.15/x
  3. Step 3: Cross multiply
    22,939.64x = 31,660.23 × 12,872.15
  4. Step 4: Simplify right side
    22,939.64x = 407,535,071.29
  5. Step 5: Solve for x
    x = 407,535,071.29/22,939.64
  6. Step 6: Final answer
    x = 17,765.54

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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.