Home / 15,861.95-23,788.29-5,330.78

Finding the Fourth Proportional to 15,861.95, 23,788.29 and 5,330.78

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Solution

The fourth proportional to 15,861.95, 23,788.29 and 5,330.78 is: 7,994.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,861.95 : 23,788.29 = 5,330.78 : x
  2. Step 2: Convert to fraction form
    15,861.95/23,788.29 = 5,330.78/x
  3. Step 3: Cross multiply
    15,861.95x = 23,788.29 × 5,330.78
  4. Step 4: Simplify right side
    15,861.95x = 126,810,021.62
  5. Step 5: Solve for x
    x = 126,810,021.62/15,861.95
  6. Step 6: Final answer
    x = 7,994.61

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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.