Home / 20,799.15-28,703.49-11,367.51

Finding the Fourth Proportional to 20,799.15, 28,703.49 and 11,367.51

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Solution

The fourth proportional to 20,799.15, 28,703.49 and 11,367.51 is: 15,687.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,799.15 : 28,703.49 = 11,367.51 : x
  2. Step 2: Convert to fraction form
    20,799.15/28,703.49 = 11,367.51/x
  3. Step 3: Cross multiply
    20,799.15x = 28,703.49 × 11,367.51
  4. Step 4: Simplify right side
    20,799.15x = 326,287,209.61
  5. Step 5: Solve for x
    x = 326,287,209.61/20,799.15
  6. Step 6: Final answer
    x = 15,687.53

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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.