Home / 20,904.72-28,847.34-11,472.54

Finding the Fourth Proportional to 20,904.72, 28,847.34 and 11,472.54

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Solution

The fourth proportional to 20,904.72, 28,847.34 and 11,472.54 is: 15,831.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.72 : 28,847.34 = 11,472.54 : x
  2. Step 2: Convert to fraction form
    20,904.72/28,847.34 = 11,472.54/x
  3. Step 3: Cross multiply
    20,904.72x = 28,847.34 × 11,472.54
  4. Step 4: Simplify right side
    20,904.72x = 330,952,262.04
  5. Step 5: Solve for x
    x = 330,952,262.04/20,904.72
  6. Step 6: Final answer
    x = 15,831.46

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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.