Home / 20,788.32-28,654.18-16,243.06

Finding the Fourth Proportional to 20,788.32, 28,654.18 and 16,243.06

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Solution

The fourth proportional to 20,788.32, 28,654.18 and 16,243.06 is: 22,389.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,788.32 : 28,654.18 = 16,243.06 : x
  2. Step 2: Convert to fraction form
    20,788.32/28,654.18 = 16,243.06/x
  3. Step 3: Cross multiply
    20,788.32x = 28,654.18 × 16,243.06
  4. Step 4: Simplify right side
    20,788.32x = 465,431,471.57
  5. Step 5: Solve for x
    x = 465,431,471.57/20,788.32
  6. Step 6: Final answer
    x = 22,389.08

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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.