Home / 12,509.25-18,759.17-5,109.76

Finding the Fourth Proportional to 12,509.25, 18,759.17 and 5,109.76

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Solution

The fourth proportional to 12,509.25, 18,759.17 and 5,109.76 is: 7,662.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,509.25 : 18,759.17 = 5,109.76 : x
  2. Step 2: Convert to fraction form
    12,509.25/18,759.17 = 5,109.76/x
  3. Step 3: Cross multiply
    12,509.25x = 18,759.17 × 5,109.76
  4. Step 4: Simplify right side
    12,509.25x = 95,854,762.70
  5. Step 5: Solve for x
    x = 95,854,762.70/12,509.25
  6. Step 6: Final answer
    x = 7,662.71

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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.