Home / 39,867.81-59,787.68-11,780.39

Finding the Fourth Proportional to 39,867.81, 59,787.68 and 11,780.39

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Solution

The fourth proportional to 39,867.81, 59,787.68 and 11,780.39 is: 17,666.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,867.81 : 59,787.68 = 11,780.39 : x
  2. Step 2: Convert to fraction form
    39,867.81/59,787.68 = 11,780.39/x
  3. Step 3: Cross multiply
    39,867.81x = 59,787.68 × 11,780.39
  4. Step 4: Simplify right side
    39,867.81x = 704,321,829.75
  5. Step 5: Solve for x
    x = 704,321,829.75/39,867.81
  6. Step 6: Final answer
    x = 17,666.43

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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.