Home / 38,219.86-57,318.72-13,258.90

Finding the Fourth Proportional to 38,219.86, 57,318.72 and 13,258.90

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Solution

The fourth proportional to 38,219.86, 57,318.72 and 13,258.90 is: 19,884.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,219.86 : 57,318.72 = 13,258.90 : x
  2. Step 2: Convert to fraction form
    38,219.86/57,318.72 = 13,258.90/x
  3. Step 3: Cross multiply
    38,219.86x = 57,318.72 × 13,258.90
  4. Step 4: Simplify right side
    38,219.86x = 759,983,176.61
  5. Step 5: Solve for x
    x = 759,983,176.61/38,219.86
  6. Step 6: Final answer
    x = 19,884.51

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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.