Home / 38,639.95-57,966.45-11,979.82

Finding the Fourth Proportional to 38,639.95, 57,966.45 and 11,979.82

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Solution

The fourth proportional to 38,639.95, 57,966.45 and 11,979.82 is: 17,971.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,639.95 : 57,966.45 = 11,979.82 : x
  2. Step 2: Convert to fraction form
    38,639.95/57,966.45 = 11,979.82/x
  3. Step 3: Cross multiply
    38,639.95x = 57,966.45 × 11,979.82
  4. Step 4: Simplify right side
    38,639.95x = 694,427,637.04
  5. Step 5: Solve for x
    x = 694,427,637.04/38,639.95
  6. Step 6: Final answer
    x = 17,971.75

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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.