Home / 13,839.12-19,098-7,871.76

Finding the Fourth Proportional to 13,839.12, 19,098 and 7,871.76

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Solution

The fourth proportional to 13,839.12, 19,098 and 7,871.76 is: 10,863.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,839.12 : 19,098 = 7,871.76 : x
  2. Step 2: Convert to fraction form
    13,839.12/19,098 = 7,871.76/x
  3. Step 3: Cross multiply
    13,839.12x = 19,098 × 7,871.76
  4. Step 4: Simplify right side
    13,839.12x = 150,334,872.48
  5. Step 5: Solve for x
    x = 150,334,872.48/13,839.12
  6. Step 6: Final answer
    x = 10,863.04

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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.