Home / 23,129.75-31,919.27-12,519.56

Finding the Fourth Proportional to 23,129.75, 31,919.27 and 12,519.56

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Solution

The fourth proportional to 23,129.75, 31,919.27 and 12,519.56 is: 17,277.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,129.75 : 31,919.27 = 12,519.56 : x
  2. Step 2: Convert to fraction form
    23,129.75/31,919.27 = 12,519.56/x
  3. Step 3: Cross multiply
    23,129.75x = 31,919.27 × 12,519.56
  4. Step 4: Simplify right side
    23,129.75x = 399,615,233.12
  5. Step 5: Solve for x
    x = 399,615,233.12/23,129.75
  6. Step 6: Final answer
    x = 17,277.11

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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.