Home / 27,948.18-38,548.97-18,980.12

Finding the Fourth Proportional to 27,948.18, 38,548.97 and 18,980.12

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Solution

The fourth proportional to 27,948.18, 38,548.97 and 18,980.12 is: 26,179.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,948.18 : 38,548.97 = 18,980.12 : x
  2. Step 2: Convert to fraction form
    27,948.18/38,548.97 = 18,980.12/x
  3. Step 3: Cross multiply
    27,948.18x = 38,548.97 × 18,980.12
  4. Step 4: Simplify right side
    27,948.18x = 731,663,788.83
  5. Step 5: Solve for x
    x = 731,663,788.83/27,948.18
  6. Step 6: Final answer
    x = 26,179.30

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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.