Home / 12,399.86-17,111.75-6,734.56

Finding the Fourth Proportional to 12,399.86, 17,111.75 and 6,734.56

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Solution

The fourth proportional to 12,399.86, 17,111.75 and 6,734.56 is: 9,293.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,399.86 : 17,111.75 = 6,734.56 : x
  2. Step 2: Convert to fraction form
    12,399.86/17,111.75 = 6,734.56/x
  3. Step 3: Cross multiply
    12,399.86x = 17,111.75 × 6,734.56
  4. Step 4: Simplify right side
    12,399.86x = 115,240,073.41
  5. Step 5: Solve for x
    x = 115,240,073.41/12,399.86
  6. Step 6: Final answer
    x = 9,293.66

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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.