Home / 13,142.51-19,713.66-3,281.72

Finding the Fourth Proportional to 13,142.51, 19,713.66 and 3,281.72

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Solution

The fourth proportional to 13,142.51, 19,713.66 and 3,281.72 is: 4,922.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,142.51 : 19,713.66 = 3,281.72 : x
  2. Step 2: Convert to fraction form
    13,142.51/19,713.66 = 3,281.72/x
  3. Step 3: Cross multiply
    13,142.51x = 19,713.66 × 3,281.72
  4. Step 4: Simplify right side
    13,142.51x = 64,694,638.38
  5. Step 5: Solve for x
    x = 64,694,638.38/13,142.51
  6. Step 6: Final answer
    x = 4,922.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.