Home / 38,678.71-58,018.88-12,383.38

Finding the Fourth Proportional to 38,678.71, 58,018.88 and 12,383.38

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Solution

The fourth proportional to 38,678.71, 58,018.88 and 12,383.38 is: 18,575.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,678.71 : 58,018.88 = 12,383.38 : x
  2. Step 2: Convert to fraction form
    38,678.71/58,018.88 = 12,383.38/x
  3. Step 3: Cross multiply
    38,678.71x = 58,018.88 × 12,383.38
  4. Step 4: Simplify right side
    38,678.71x = 718,469,631.25
  5. Step 5: Solve for x
    x = 718,469,631.25/38,678.71
  6. Step 6: Final answer
    x = 18,575.33

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1.5x scale

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.