Home / 20,864.30-31,110.34-18,546.08

Finding the Fourth Proportional to 20,864.30, 31,110.34 and 18,546.08

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Solution

The fourth proportional to 20,864.30, 31,110.34 and 18,546.08 is: 27,653.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.30 : 31,110.34 = 18,546.08 : x
  2. Step 2: Convert to fraction form
    20,864.30/31,110.34 = 18,546.08/x
  3. Step 3: Cross multiply
    20,864.30x = 31,110.34 × 18,546.08
  4. Step 4: Simplify right side
    20,864.30x = 576,974,854.47
  5. Step 5: Solve for x
    x = 576,974,854.47/20,864.30
  6. Step 6: Final answer
    x = 27,653.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.