Home / 38,938.26-58,416.57-12,640.98

Finding the Fourth Proportional to 38,938.26, 58,416.57 and 12,640.98

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Solution

The fourth proportional to 38,938.26, 58,416.57 and 12,640.98 is: 18,964.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,938.26 : 58,416.57 = 12,640.98 : x
  2. Step 2: Convert to fraction form
    38,938.26/58,416.57 = 12,640.98/x
  3. Step 3: Cross multiply
    38,938.26x = 58,416.57 × 12,640.98
  4. Step 4: Simplify right side
    38,938.26x = 738,442,693.04
  5. Step 5: Solve for x
    x = 738,442,693.04/38,938.26
  6. Step 6: Final answer
    x = 18,964.45

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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.