Home / 38,477.30-57,721.35-12,179.30

Finding the Fourth Proportional to 38,477.30, 57,721.35 and 12,179.30

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Solution

The fourth proportional to 38,477.30, 57,721.35 and 12,179.30 is: 18,270.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,477.30 : 57,721.35 = 12,179.30 : x
  2. Step 2: Convert to fraction form
    38,477.30/57,721.35 = 12,179.30/x
  3. Step 3: Cross multiply
    38,477.30x = 57,721.35 × 12,179.30
  4. Step 4: Simplify right side
    38,477.30x = 703,005,638.06
  5. Step 5: Solve for x
    x = 703,005,638.06/38,477.30
  6. Step 6: Final answer
    x = 18,270.66

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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.