Home / 23,138.15-31,930.64-12,527.78

Finding the Fourth Proportional to 23,138.15, 31,930.64 and 12,527.78

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Solution

The fourth proportional to 23,138.15, 31,930.64 and 12,527.78 is: 17,288.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,138.15 : 31,930.64 = 12,527.78 : x
  2. Step 2: Convert to fraction form
    23,138.15/31,930.64 = 12,527.78/x
  3. Step 3: Cross multiply
    23,138.15x = 31,930.64 × 12,527.78
  4. Step 4: Simplify right side
    23,138.15x = 400,019,904.85
  5. Step 5: Solve for x
    x = 400,019,904.85/23,138.15
  6. Step 6: Final answer
    x = 17,288.33

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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.