Home / 15,445.29-21,313.92-8,371.56

Finding the Fourth Proportional to 15,445.29, 21,313.92 and 8,371.56

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Solution

The fourth proportional to 15,445.29, 21,313.92 and 8,371.56 is: 11,552.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,445.29 : 21,313.92 = 8,371.56 : x
  2. Step 2: Convert to fraction form
    15,445.29/21,313.92 = 8,371.56/x
  3. Step 3: Cross multiply
    15,445.29x = 21,313.92 × 8,371.56
  4. Step 4: Simplify right side
    15,445.29x = 178,430,760.12
  5. Step 5: Solve for x
    x = 178,430,760.12/15,445.29
  6. Step 6: Final answer
    x = 11,552.44

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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.