Home / 12,505.19-18,757.78-5,012.13

Finding the Fourth Proportional to 12,505.19, 18,757.78 and 5,012.13

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Solution

The fourth proportional to 12,505.19, 18,757.78 and 5,012.13 is: 7,518.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.19 : 18,757.78 = 5,012.13 : x
  2. Step 2: Convert to fraction form
    12,505.19/18,757.78 = 5,012.13/x
  3. Step 3: Cross multiply
    12,505.19x = 18,757.78 × 5,012.13
  4. Step 4: Simplify right side
    12,505.19x = 94,016,489.68
  5. Step 5: Solve for x
    x = 94,016,489.68/12,505.19
  6. Step 6: Final answer
    x = 7,518.20

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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.