Home / 28,191.13-42,268.31-9,213.43

Finding the Fourth Proportional to 28,191.13, 42,268.31 and 9,213.43

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Solution

The fourth proportional to 28,191.13, 42,268.31 and 9,213.43 is: 13,814.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,191.13 : 42,268.31 = 9,213.43 : x
  2. Step 2: Convert to fraction form
    28,191.13/42,268.31 = 9,213.43/x
  3. Step 3: Cross multiply
    28,191.13x = 42,268.31 × 9,213.43
  4. Step 4: Simplify right side
    28,191.13x = 389,436,115.40
  5. Step 5: Solve for x
    x = 389,436,115.40/28,191.13
  6. Step 6: Final answer
    x = 13,814.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.