Home / 12,505.36-18,739.48-5,100.76

Finding the Fourth Proportional to 12,505.36, 18,739.48 and 5,100.76

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Solution

The fourth proportional to 12,505.36, 18,739.48 and 5,100.76 is: 7,643.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.36 : 18,739.48 = 5,100.76 : x
  2. Step 2: Convert to fraction form
    12,505.36/18,739.48 = 5,100.76/x
  3. Step 3: Cross multiply
    12,505.36x = 18,739.48 × 5,100.76
  4. Step 4: Simplify right side
    12,505.36x = 95,585,590.00
  5. Step 5: Solve for x
    x = 95,585,590.00/12,505.36
  6. Step 6: Final answer
    x = 7,643.57

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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.