Home / 12,839.38-17,716.58-7,173.43

Finding the Fourth Proportional to 12,839.38, 17,716.58 and 7,173.43

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Solution

The fourth proportional to 12,839.38, 17,716.58 and 7,173.43 is: 9,898.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,839.38 : 17,716.58 = 7,173.43 : x
  2. Step 2: Convert to fraction form
    12,839.38/17,716.58 = 7,173.43/x
  3. Step 3: Cross multiply
    12,839.38x = 17,716.58 × 7,173.43
  4. Step 4: Simplify right side
    12,839.38x = 127,088,646.47
  5. Step 5: Solve for x
    x = 127,088,646.47/12,839.38
  6. Step 6: Final answer
    x = 9,898.35

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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.