Home / 13,742.12-18,964.10-7,454.48

Finding the Fourth Proportional to 13,742.12, 18,964.10 and 7,454.48

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Solution

The fourth proportional to 13,742.12, 18,964.10 and 7,454.48 is: 10,287.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.12 : 18,964.10 = 7,454.48 : x
  2. Step 2: Convert to fraction form
    13,742.12/18,964.10 = 7,454.48/x
  3. Step 3: Cross multiply
    13,742.12x = 18,964.10 × 7,454.48
  4. Step 4: Simplify right side
    13,742.12x = 141,367,504.17
  5. Step 5: Solve for x
    x = 141,367,504.17/13,742.12
  6. Step 6: Final answer
    x = 10,287.17

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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.