Home / 13,718.94-18,932.10-7,431.30

Finding the Fourth Proportional to 13,718.94, 18,932.10 and 7,431.30

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Solution

The fourth proportional to 13,718.94, 18,932.10 and 7,431.30 is: 10,255.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,718.94 : 18,932.10 = 7,431.30 : x
  2. Step 2: Convert to fraction form
    13,718.94/18,932.10 = 7,431.30/x
  3. Step 3: Cross multiply
    13,718.94x = 18,932.10 × 7,431.30
  4. Step 4: Simplify right side
    13,718.94x = 140,690,114.73
  5. Step 5: Solve for x
    x = 140,690,114.73/13,718.94
  6. Step 6: Final answer
    x = 10,255.17

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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.