Home / 19,831.28-27,367-10,878.72

Finding the Fourth Proportional to 19,831.28, 27,367 and 10,878.72

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Solution

The fourth proportional to 19,831.28, 27,367 and 10,878.72 is: 15,012.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,831.28 : 27,367 = 10,878.72 : x
  2. Step 2: Convert to fraction form
    19,831.28/27,367 = 10,878.72/x
  3. Step 3: Cross multiply
    19,831.28x = 27,367 × 10,878.72
  4. Step 4: Simplify right side
    19,831.28x = 297,717,930.24
  5. Step 5: Solve for x
    x = 297,717,930.24/19,831.28
  6. Step 6: Final answer
    x = 15,012.54

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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.