Home / 11,107.46-15,328.76-6,391.76

Finding the Fourth Proportional to 11,107.46, 15,328.76 and 6,391.76

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Solution

The fourth proportional to 11,107.46, 15,328.76 and 6,391.76 is: 8,820.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,107.46 : 15,328.76 = 6,391.76 : x
  2. Step 2: Convert to fraction form
    11,107.46/15,328.76 = 6,391.76/x
  3. Step 3: Cross multiply
    11,107.46x = 15,328.76 × 6,391.76
  4. Step 4: Simplify right side
    11,107.46x = 97,977,755.02
  5. Step 5: Solve for x
    x = 97,977,755.02/11,107.46
  6. Step 6: Final answer
    x = 8,820.90

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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.