Home / 12,912.09-17,819.40-7,246.53

Finding the Fourth Proportional to 12,912.09, 17,819.40 and 7,246.53

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Solution

The fourth proportional to 12,912.09, 17,819.40 and 7,246.53 is: 10,000.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,912.09 : 17,819.40 = 7,246.53 : x
  2. Step 2: Convert to fraction form
    12,912.09/17,819.40 = 7,246.53/x
  3. Step 3: Cross multiply
    12,912.09x = 17,819.40 × 7,246.53
  4. Step 4: Simplify right side
    12,912.09x = 129,128,816.68
  5. Step 5: Solve for x
    x = 129,128,816.68/12,912.09
  6. Step 6: Final answer
    x = 10,000.61

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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.