Home / 12,845.61-19,255.28-7,287.21

Finding the Fourth Proportional to 12,845.61, 19,255.28 and 7,287.21

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Solution

The fourth proportional to 12,845.61, 19,255.28 and 7,287.21 is: 10,923.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,845.61 : 19,255.28 = 7,287.21 : x
  2. Step 2: Convert to fraction form
    12,845.61/19,255.28 = 7,287.21/x
  3. Step 3: Cross multiply
    12,845.61x = 19,255.28 × 7,287.21
  4. Step 4: Simplify right side
    12,845.61x = 140,317,335.33
  5. Step 5: Solve for x
    x = 140,317,335.33/12,845.61
  6. Step 6: Final answer
    x = 10,923.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.