Home / 13,718.92-18,932.16-7,431.28

Finding the Fourth Proportional to 13,718.92, 18,932.16 and 7,431.28

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Solution

The fourth proportional to 13,718.92, 18,932.16 and 7,431.28 is: 10,255.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.92 : 18,932.16 = 7,431.28 : x
  2. Step 2: Convert to fraction form
    13,718.92/18,932.16 = 7,431.28/x
  3. Step 3: Cross multiply
    13,718.92x = 18,932.16 × 7,431.28
  4. Step 4: Simplify right side
    13,718.92x = 140,690,181.96
  5. Step 5: Solve for x
    x = 140,690,181.96/13,718.92
  6. Step 6: Final answer
    x = 10,255.19

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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.