Home / 20,864.61-31,110.80-18,546.39

Finding the Fourth Proportional to 20,864.61, 31,110.80 and 18,546.39

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Solution

The fourth proportional to 20,864.61, 31,110.80 and 18,546.39 is: 27,654.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,864.61 : 31,110.80 = 18,546.39 : x
  2. Step 2: Convert to fraction form
    20,864.61/31,110.80 = 18,546.39/x
  3. Step 3: Cross multiply
    20,864.61x = 31,110.80 × 18,546.39
  4. Step 4: Simplify right side
    20,864.61x = 576,992,937.28
  5. Step 5: Solve for x
    x = 576,992,937.28/20,864.61
  6. Step 6: Final answer
    x = 27,654.14

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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.