Home / 20,904.75-28,852.20-11,952.63

Finding the Fourth Proportional to 20,904.75, 28,852.20 and 11,952.63

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Solution

The fourth proportional to 20,904.75, 28,852.20 and 11,952.63 is: 16,496.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,904.75 : 28,852.20 = 11,952.63 : x
  2. Step 2: Convert to fraction form
    20,904.75/28,852.20 = 11,952.63/x
  3. Step 3: Cross multiply
    20,904.75x = 28,852.20 × 11,952.63
  4. Step 4: Simplify right side
    20,904.75x = 344,859,671.29
  5. Step 5: Solve for x
    x = 344,859,671.29/20,904.75
  6. Step 6: Final answer
    x = 16,496.71

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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.