Home / 12,831.40-19,256.82-8,661.52

Finding the Fourth Proportional to 12,831.40, 19,256.82 and 8,661.52

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Solution

The fourth proportional to 12,831.40, 19,256.82 and 8,661.52 is: 12,998.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,831.40 : 19,256.82 = 8,661.52 : x
  2. Step 2: Convert to fraction form
    12,831.40/19,256.82 = 8,661.52/x
  3. Step 3: Cross multiply
    12,831.40x = 19,256.82 × 8,661.52
  4. Step 4: Simplify right side
    12,831.40x = 166,793,331.57
  5. Step 5: Solve for x
    x = 166,793,331.57/12,831.40
  6. Step 6: Final answer
    x = 12,998.84

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1.5x scale

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.