Home / 20,799.80-28,703.29-11,368.43

Finding the Fourth Proportional to 20,799.80, 28,703.29 and 11,368.43

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Solution

The fourth proportional to 20,799.80, 28,703.29 and 11,368.43 is: 15,688.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,799.80 : 28,703.29 = 11,368.43 : x
  2. Step 2: Convert to fraction form
    20,799.80/28,703.29 = 11,368.43/x
  3. Step 3: Cross multiply
    20,799.80x = 28,703.29 × 11,368.43
  4. Step 4: Simplify right side
    20,799.80x = 326,311,343.13
  5. Step 5: Solve for x
    x = 326,311,343.13/20,799.80
  6. Step 6: Final answer
    x = 15,688.20

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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.