Home / 28,306.20-39,066.93-20,374.68

Finding the Fourth Proportional to 28,306.20, 39,066.93 and 20,374.68

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Solution

The fourth proportional to 28,306.20, 39,066.93 and 20,374.68 is: 28,120.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,306.20 : 39,066.93 = 20,374.68 : x
  2. Step 2: Convert to fraction form
    28,306.20/39,066.93 = 20,374.68/x
  3. Step 3: Cross multiply
    28,306.20x = 39,066.93 × 20,374.68
  4. Step 4: Simplify right side
    28,306.20x = 795,976,197.33
  5. Step 5: Solve for x
    x = 795,976,197.33/28,306.20
  6. Step 6: Final answer
    x = 28,120.21

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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.