Home / 12,839.32-17,717.63-7,172.94

Finding the Fourth Proportional to 12,839.32, 17,717.63 and 7,172.94

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Solution

The fourth proportional to 12,839.32, 17,717.63 and 7,172.94 is: 9,898.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,839.32 : 17,717.63 = 7,172.94 : x
  2. Step 2: Convert to fraction form
    12,839.32/17,717.63 = 7,172.94/x
  3. Step 3: Cross multiply
    12,839.32x = 17,717.63 × 7,172.94
  4. Step 4: Simplify right side
    12,839.32x = 127,087,496.93
  5. Step 5: Solve for x
    x = 127,087,496.93/12,839.32
  6. Step 6: Final answer
    x = 9,898.30

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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.