Home / 27,789.60-38,355.32-18,839.98

Finding the Fourth Proportional to 27,789.60, 38,355.32 and 18,839.98

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Solution

The fourth proportional to 27,789.60, 38,355.32 and 18,839.98 is: 26,003.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,789.60 : 38,355.32 = 18,839.98 : x
  2. Step 2: Convert to fraction form
    27,789.60/38,355.32 = 18,839.98/x
  3. Step 3: Cross multiply
    27,789.60x = 38,355.32 × 18,839.98
  4. Step 4: Simplify right side
    27,789.60x = 722,613,461.69
  5. Step 5: Solve for x
    x = 722,613,461.69/27,789.60
  6. Step 6: Final answer
    x = 26,003.02

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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.