Home / 19,831.92-29,736.95-8,131.47

Finding the Fourth Proportional to 19,831.92, 29,736.95 and 8,131.47

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Solution

The fourth proportional to 19,831.92, 29,736.95 and 8,131.47 is: 12,192.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,831.92 : 29,736.95 = 8,131.47 : x
  2. Step 2: Convert to fraction form
    19,831.92/29,736.95 = 8,131.47/x
  3. Step 3: Cross multiply
    19,831.92x = 29,736.95 × 8,131.47
  4. Step 4: Simplify right side
    19,831.92x = 241,805,076.16
  5. Step 5: Solve for x
    x = 241,805,076.16/19,831.92
  6. Step 6: Final answer
    x = 12,192.72

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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.