Home / 13,839.80-19,079.14-8,531.08

Finding the Fourth Proportional to 13,839.80, 19,079.14 and 8,531.08

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Solution

The fourth proportional to 13,839.80, 19,079.14 and 8,531.08 is: 11,760.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,839.80 : 19,079.14 = 8,531.08 : x
  2. Step 2: Convert to fraction form
    13,839.80/19,079.14 = 8,531.08/x
  3. Step 3: Cross multiply
    13,839.80x = 19,079.14 × 8,531.08
  4. Step 4: Simplify right side
    13,839.80x = 162,765,669.67
  5. Step 5: Solve for x
    x = 162,765,669.67/13,839.80
  6. Step 6: Final answer
    x = 11,760.70

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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.