Home / 20,903.88-28,847.39-11,472.42

Finding the Fourth Proportional to 20,903.88, 28,847.39 and 11,472.42

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Solution

The fourth proportional to 20,903.88, 28,847.39 and 11,472.42 is: 15,831.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,903.88 : 28,847.39 = 11,472.42 : x
  2. Step 2: Convert to fraction form
    20,903.88/28,847.39 = 11,472.42/x
  3. Step 3: Cross multiply
    20,903.88x = 28,847.39 × 11,472.42
  4. Step 4: Simplify right side
    20,903.88x = 330,949,373.98
  5. Step 5: Solve for x
    x = 330,949,373.98/20,903.88
  6. Step 6: Final answer
    x = 15,831.96

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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.