Home / 27,551.80-38,018.10-18,618.76

Finding the Fourth Proportional to 27,551.80, 38,018.10 and 18,618.76

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Solution

The fourth proportional to 27,551.80, 38,018.10 and 18,618.76 is: 25,691.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,551.80 : 38,018.10 = 18,618.76 : x
  2. Step 2: Convert to fraction form
    27,551.80/38,018.10 = 18,618.76/x
  3. Step 3: Cross multiply
    27,551.80x = 38,018.10 × 18,618.76
  4. Step 4: Simplify right side
    27,551.80x = 707,849,879.56
  5. Step 5: Solve for x
    x = 707,849,879.56/27,551.80
  6. Step 6: Final answer
    x = 25,691.60

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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.