Home / 20,168.66-27,831.92-11,215.50

Finding the Fourth Proportional to 20,168.66, 27,831.92 and 11,215.50

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Solution

The fourth proportional to 20,168.66, 27,831.92 and 11,215.50 is: 15,476.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,168.66 : 27,831.92 = 11,215.50 : x
  2. Step 2: Convert to fraction form
    20,168.66/27,831.92 = 11,215.50/x
  3. Step 3: Cross multiply
    20,168.66x = 27,831.92 × 11,215.50
  4. Step 4: Simplify right side
    20,168.66x = 312,148,898.76
  5. Step 5: Solve for x
    x = 312,148,898.76/20,168.66
  6. Step 6: Final answer
    x = 15,476.93

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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.