Home / 10,072.20-13,901.10-8,391.24

Finding the Fourth Proportional to 10,072.20, 13,901.10 and 8,391.24

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Solution

The fourth proportional to 10,072.20, 13,901.10 and 8,391.24 is: 11,581.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,072.20 : 13,901.10 = 8,391.24 : x
  2. Step 2: Convert to fraction form
    10,072.20/13,901.10 = 8,391.24/x
  3. Step 3: Cross multiply
    10,072.20x = 13,901.10 × 8,391.24
  4. Step 4: Simplify right side
    10,072.20x = 116,647,466.36
  5. Step 5: Solve for x
    x = 116,647,466.36/10,072.20
  6. Step 6: Final answer
    x = 11,581.13

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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.