Home / 20,903.92-28,846.76-11,472.24

Finding the Fourth Proportional to 20,903.92, 28,846.76 and 11,472.24

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Solution

The fourth proportional to 20,903.92, 28,846.76 and 11,472.24 is: 15,831.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,903.92 : 28,846.76 = 11,472.24 : x
  2. Step 2: Convert to fraction form
    20,903.92/28,846.76 = 11,472.24/x
  3. Step 3: Cross multiply
    20,903.92x = 28,846.76 × 11,472.24
  4. Step 4: Simplify right side
    20,903.92x = 330,936,953.94
  5. Step 5: Solve for x
    x = 330,936,953.94/20,903.92
  6. Step 6: Final answer
    x = 15,831.33

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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.