Home / 13,839.53-19,098.46-7,871.21

Finding the Fourth Proportional to 13,839.53, 19,098.46 and 7,871.21

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Solution

The fourth proportional to 13,839.53, 19,098.46 and 7,871.21 is: 10,862.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,839.53 : 19,098.46 = 7,871.21 : x
  2. Step 2: Convert to fraction form
    13,839.53/19,098.46 = 7,871.21/x
  3. Step 3: Cross multiply
    13,839.53x = 19,098.46 × 7,871.21
  4. Step 4: Simplify right side
    13,839.53x = 150,327,989.34
  5. Step 5: Solve for x
    x = 150,327,989.34/13,839.53
  6. Step 6: Final answer
    x = 10,862.22

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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.