Home / 38,379.12-57,569.04-13,419.12

Finding the Fourth Proportional to 38,379.12, 57,569.04 and 13,419.12

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Solution

The fourth proportional to 38,379.12, 57,569.04 and 13,419.12 is: 20,128.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,379.12 : 57,569.04 = 13,419.12 : x
  2. Step 2: Convert to fraction form
    38,379.12/57,569.04 = 13,419.12/x
  3. Step 3: Cross multiply
    38,379.12x = 57,569.04 × 13,419.12
  4. Step 4: Simplify right side
    38,379.12x = 772,525,856.04
  5. Step 5: Solve for x
    x = 772,525,856.04/38,379.12
  6. Step 6: Final answer
    x = 20,128.81

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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.