Home / 13,742.21-18,964.31-7,454.63

Finding the Fourth Proportional to 13,742.21, 18,964.31 and 7,454.63

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Solution

The fourth proportional to 13,742.21, 18,964.31 and 7,454.63 is: 10,287.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,742.21 : 18,964.31 = 7,454.63 : x
  2. Step 2: Convert to fraction form
    13,742.21/18,964.31 = 7,454.63/x
  3. Step 3: Cross multiply
    13,742.21x = 18,964.31 × 7,454.63
  4. Step 4: Simplify right side
    13,742.21x = 141,371,876.98
  5. Step 5: Solve for x
    x = 141,371,876.98/13,742.21
  6. Step 6: Final answer
    x = 10,287.42

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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.