Home / 13,742.11-18,964.16-7,454.53

Finding the Fourth Proportional to 13,742.11, 18,964.16 and 7,454.53

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Solution

The fourth proportional to 13,742.11, 18,964.16 and 7,454.53 is: 10,287.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.11 : 18,964.16 = 7,454.53 : x
  2. Step 2: Convert to fraction form
    13,742.11/18,964.16 = 7,454.53/x
  3. Step 3: Cross multiply
    13,742.11x = 18,964.16 × 7,454.53
  4. Step 4: Simplify right side
    13,742.11x = 141,368,899.64
  5. Step 5: Solve for x
    x = 141,368,899.64/13,742.11
  6. Step 6: Final answer
    x = 10,287.28

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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.