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Finding the Fourth Proportional to 12,489.65, 17,237.52 and 7,454.08

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Solution

The fourth proportional to 12,489.65, 17,237.52 and 7,454.08 is: 10,287.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,489.65 : 17,237.52 = 7,454.08 : x
  2. Step 2: Convert to fraction form
    12,489.65/17,237.52 = 7,454.08/x
  3. Step 3: Cross multiply
    12,489.65x = 17,237.52 × 7,454.08
  4. Step 4: Simplify right side
    12,489.65x = 128,489,809.99
  5. Step 5: Solve for x
    x = 128,489,809.99/12,489.65
  6. Step 6: Final answer
    x = 10,287.71

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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.