Home / 22,707.42-31,331.31-13,755.30

Finding the Fourth Proportional to 22,707.42, 31,331.31 and 13,755.30

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Solution

The fourth proportional to 22,707.42, 31,331.31 and 13,755.30 is: 18,979.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,707.42 : 31,331.31 = 13,755.30 : x
  2. Step 2: Convert to fraction form
    22,707.42/31,331.31 = 13,755.30/x
  3. Step 3: Cross multiply
    22,707.42x = 31,331.31 × 13,755.30
  4. Step 4: Simplify right side
    22,707.42x = 430,971,568.44
  5. Step 5: Solve for x
    x = 430,971,568.44/22,707.42
  6. Step 6: Final answer
    x = 18,979.33

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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.