Home / 11,391.30-15,719.95-6,355.53

Finding the Fourth Proportional to 11,391.30, 15,719.95 and 6,355.53

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Solution

The fourth proportional to 11,391.30, 15,719.95 and 6,355.53 is: 8,770.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,391.30 : 15,719.95 = 6,355.53 : x
  2. Step 2: Convert to fraction form
    11,391.30/15,719.95 = 6,355.53/x
  3. Step 3: Cross multiply
    11,391.30x = 15,719.95 × 6,355.53
  4. Step 4: Simplify right side
    11,391.30x = 99,908,597.93
  5. Step 5: Solve for x
    x = 99,908,597.93/11,391.30
  6. Step 6: Final answer
    x = 8,770.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.