Home / 38,320.29-57,486.51-12,018.78

Finding the Fourth Proportional to 38,320.29, 57,486.51 and 12,018.78

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Solution

The fourth proportional to 38,320.29, 57,486.51 and 12,018.78 is: 18,030.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,320.29 : 57,486.51 = 12,018.78 : x
  2. Step 2: Convert to fraction form
    38,320.29/57,486.51 = 12,018.78/x
  3. Step 3: Cross multiply
    38,320.29x = 57,486.51 × 12,018.78
  4. Step 4: Simplify right side
    38,320.29x = 690,917,716.66
  5. Step 5: Solve for x
    x = 690,917,716.66/38,320.29
  6. Step 6: Final answer
    x = 18,030.08

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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.