Home / 13,720.80-18,934.69-7,433.18

Finding the Fourth Proportional to 13,720.80, 18,934.69 and 7,433.18

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Solution

The fourth proportional to 13,720.80, 18,934.69 and 7,433.18 is: 10,257.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,720.80 : 18,934.69 = 7,433.18 : x
  2. Step 2: Convert to fraction form
    13,720.80/18,934.69 = 7,433.18/x
  3. Step 3: Cross multiply
    13,720.80x = 18,934.69 × 7,433.18
  4. Step 4: Simplify right side
    13,720.80x = 140,744,959.01
  5. Step 5: Solve for x
    x = 140,744,959.01/13,720.80
  6. Step 6: Final answer
    x = 10,257.78

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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.