Home / 38,638.55-57,958.13-13,678.71

Finding the Fourth Proportional to 38,638.55, 57,958.13 and 13,678.71

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Solution

The fourth proportional to 38,638.55, 57,958.13 and 13,678.71 is: 20,518.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,638.55 : 57,958.13 = 13,678.71 : x
  2. Step 2: Convert to fraction form
    38,638.55/57,958.13 = 13,678.71/x
  3. Step 3: Cross multiply
    38,638.55x = 57,958.13 × 13,678.71
  4. Step 4: Simplify right side
    38,638.55x = 792,792,269.27
  5. Step 5: Solve for x
    x = 792,792,269.27/38,638.55
  6. Step 6: Final answer
    x = 20,518.17

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1.5x scale

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.