Home / 31,742.05-43,784.13-20,426.26

Finding the Fourth Proportional to 31,742.05, 43,784.13 and 20,426.26

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Solution

The fourth proportional to 31,742.05, 43,784.13 and 20,426.26 is: 28,175.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,742.05 : 43,784.13 = 20,426.26 : x
  2. Step 2: Convert to fraction form
    31,742.05/43,784.13 = 20,426.26/x
  3. Step 3: Cross multiply
    31,742.05x = 43,784.13 × 20,426.26
  4. Step 4: Simplify right side
    31,742.05x = 894,346,023.25
  5. Step 5: Solve for x
    x = 894,346,023.25/31,742.05
  6. Step 6: Final answer
    x = 28,175.43

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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.