Home / 20,566.80-28,428.84-18,933.84

Finding the Fourth Proportional to 20,566.80, 28,428.84 and 18,933.84

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Solution

The fourth proportional to 20,566.80, 28,428.84 and 18,933.84 is: 26,171.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.80 : 28,428.84 = 18,933.84 : x
  2. Step 2: Convert to fraction form
    20,566.80/28,428.84 = 18,933.84/x
  3. Step 3: Cross multiply
    20,566.80x = 28,428.84 × 18,933.84
  4. Step 4: Simplify right side
    20,566.80x = 538,267,107.95
  5. Step 5: Solve for x
    x = 538,267,107.95/20,566.80
  6. Step 6: Final answer
    x = 26,171.65

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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.