Home / 12,505.80-18,742.32-5,101.50

Finding the Fourth Proportional to 12,505.80, 18,742.32 and 5,101.50

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Solution

The fourth proportional to 12,505.80, 18,742.32 and 5,101.50 is: 7,645.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.80 : 18,742.32 = 5,101.50 : x
  2. Step 2: Convert to fraction form
    12,505.80/18,742.32 = 5,101.50/x
  3. Step 3: Cross multiply
    12,505.80x = 18,742.32 × 5,101.50
  4. Step 4: Simplify right side
    12,505.80x = 95,613,945.48
  5. Step 5: Solve for x
    x = 95,613,945.48/12,505.80
  6. Step 6: Final answer
    x = 7,645.57

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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.