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Finding the Fourth Proportional to 12,628.53, 17,428.94 and 7,252.65

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Solution

The fourth proportional to 12,628.53, 17,428.94 and 7,252.65 is: 10,009.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,628.53 : 17,428.94 = 7,252.65 : x
  2. Step 2: Convert to fraction form
    12,628.53/17,428.94 = 7,252.65/x
  3. Step 3: Cross multiply
    12,628.53x = 17,428.94 × 7,252.65
  4. Step 4: Simplify right side
    12,628.53x = 126,406,019.82
  5. Step 5: Solve for x
    x = 126,406,019.82/12,628.53
  6. Step 6: Final answer
    x = 10,009.56

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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.