Home / 38,640.15-57,965.67-12,339.03

Finding the Fourth Proportional to 38,640.15, 57,965.67 and 12,339.03

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Solution

The fourth proportional to 38,640.15, 57,965.67 and 12,339.03 is: 18,510.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,640.15 : 57,965.67 = 12,339.03 : x
  2. Step 2: Convert to fraction form
    38,640.15/57,965.67 = 12,339.03/x
  3. Step 3: Cross multiply
    38,640.15x = 57,965.67 × 12,339.03
  4. Step 4: Simplify right side
    38,640.15x = 715,240,141.10
  5. Step 5: Solve for x
    x = 715,240,141.10/38,640.15
  6. Step 6: Final answer
    x = 18,510.28

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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.