Home / 13,742.20-18,964.16-7,454.56

Finding the Fourth Proportional to 13,742.20, 18,964.16 and 7,454.56

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Solution

The fourth proportional to 13,742.20, 18,964.16 and 7,454.56 is: 10,287.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.20 : 18,964.16 = 7,454.56 : x
  2. Step 2: Convert to fraction form
    13,742.20/18,964.16 = 7,454.56/x
  3. Step 3: Cross multiply
    13,742.20x = 18,964.16 × 7,454.56
  4. Step 4: Simplify right side
    13,742.20x = 141,369,468.57
  5. Step 5: Solve for x
    x = 141,369,468.57/13,742.20
  6. Step 6: Final answer
    x = 10,287.25

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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.