Home / 13,742.28-18,964.45-7,454.70

Finding the Fourth Proportional to 13,742.28, 18,964.45 and 7,454.70

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Solution

The fourth proportional to 13,742.28, 18,964.45 and 7,454.70 is: 10,287.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.28 : 18,964.45 = 7,454.70 : x
  2. Step 2: Convert to fraction form
    13,742.28/18,964.45 = 7,454.70/x
  3. Step 3: Cross multiply
    13,742.28x = 18,964.45 × 7,454.70
  4. Step 4: Simplify right side
    13,742.28x = 141,374,248.14
  5. Step 5: Solve for x
    x = 141,374,248.14/13,742.28
  6. Step 6: Final answer
    x = 10,287.54

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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.