Home / 12,839.12-17,717.76-7,173.50

Finding the Fourth Proportional to 12,839.12, 17,717.76 and 7,173.50

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Solution

The fourth proportional to 12,839.12, 17,717.76 and 7,173.50 is: 9,899.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,839.12 : 17,717.76 = 7,173.50 : x
  2. Step 2: Convert to fraction form
    12,839.12/17,717.76 = 7,173.50/x
  3. Step 3: Cross multiply
    12,839.12x = 17,717.76 × 7,173.50
  4. Step 4: Simplify right side
    12,839.12x = 127,098,351.36
  5. Step 5: Solve for x
    x = 127,098,351.36/12,839.12
  6. Step 6: Final answer
    x = 9,899.30

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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.