Home / 11,107.55-15,328.42-6,391.83

Finding the Fourth Proportional to 11,107.55, 15,328.42 and 6,391.83

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Solution

The fourth proportional to 11,107.55, 15,328.42 and 6,391.83 is: 8,820.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,107.55 : 15,328.42 = 6,391.83 : x
  2. Step 2: Convert to fraction form
    11,107.55/15,328.42 = 6,391.83/x
  3. Step 3: Cross multiply
    11,107.55x = 15,328.42 × 6,391.83
  4. Step 4: Simplify right side
    11,107.55x = 97,976,646.04
  5. Step 5: Solve for x
    x = 97,976,646.04/11,107.55
  6. Step 6: Final answer
    x = 8,820.73

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1.5x scale

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.