Home / 38,644.74-57,981.69-13,683.78

Finding the Fourth Proportional to 38,644.74, 57,981.69 and 13,683.78

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Solution

The fourth proportional to 38,644.74, 57,981.69 and 13,683.78 is: 20,530.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,644.74 : 57,981.69 = 13,683.78 : x
  2. Step 2: Convert to fraction form
    38,644.74/57,981.69 = 13,683.78/x
  3. Step 3: Cross multiply
    38,644.74x = 57,981.69 × 13,683.78
  4. Step 4: Simplify right side
    38,644.74x = 793,408,689.99
  5. Step 5: Solve for x
    x = 793,408,689.99/38,644.74
  6. Step 6: Final answer
    x = 20,530.83

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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.