Home / 27,806.74-38,333.18-18,358.90

Finding the Fourth Proportional to 27,806.74, 38,333.18 and 18,358.90

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Solution

The fourth proportional to 27,806.74, 38,333.18 and 18,358.90 is: 25,308.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,806.74 : 38,333.18 = 18,358.90 : x
  2. Step 2: Convert to fraction form
    27,806.74/38,333.18 = 18,358.90/x
  3. Step 3: Cross multiply
    27,806.74x = 38,333.18 × 18,358.90
  4. Step 4: Simplify right side
    27,806.74x = 703,755,018.30
  5. Step 5: Solve for x
    x = 703,755,018.30/27,806.74
  6. Step 6: Final answer
    x = 25,308.79

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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.