Home / 17,820.80-26,720.39-12,268.05

Finding the Fourth Proportional to 17,820.80, 26,720.39 and 12,268.05

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Solution

The fourth proportional to 17,820.80, 26,720.39 and 12,268.05 is: 18,394.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,820.80 : 26,720.39 = 12,268.05 : x
  2. Step 2: Convert to fraction form
    17,820.80/26,720.39 = 12,268.05/x
  3. Step 3: Cross multiply
    17,820.80x = 26,720.39 × 12,268.05
  4. Step 4: Simplify right side
    17,820.80x = 327,807,111.21
  5. Step 5: Solve for x
    x = 327,807,111.21/17,820.80
  6. Step 6: Final answer
    x = 18,394.63

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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.