Home / 20,904.09-28,847.57-11,472.81

Finding the Fourth Proportional to 20,904.09, 28,847.57 and 11,472.81

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Solution

The fourth proportional to 20,904.09, 28,847.57 and 11,472.81 is: 15,832.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.09 : 28,847.57 = 11,472.81 : x
  2. Step 2: Convert to fraction form
    20,904.09/28,847.57 = 11,472.81/x
  3. Step 3: Cross multiply
    20,904.09x = 28,847.57 × 11,472.81
  4. Step 4: Simplify right side
    20,904.09x = 330,962,632.21
  5. Step 5: Solve for x
    x = 330,962,632.21/20,904.09
  6. Step 6: Final answer
    x = 15,832.43

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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.