Home / 27,456.60-41,120.10-18,643.80

Finding the Fourth Proportional to 27,456.60, 41,120.10 and 18,643.80

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Solution

The fourth proportional to 27,456.60, 41,120.10 and 18,643.80 is: 27,921.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,456.60 : 41,120.10 = 18,643.80 : x
  2. Step 2: Convert to fraction form
    27,456.60/41,120.10 = 18,643.80/x
  3. Step 3: Cross multiply
    27,456.60x = 41,120.10 × 18,643.80
  4. Step 4: Simplify right side
    27,456.60x = 766,634,920.38
  5. Step 5: Solve for x
    x = 766,634,920.38/27,456.60
  6. Step 6: Final answer
    x = 27,921.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.