Home / 31,161.36-43,002.36-19,219.92

Finding the Fourth Proportional to 31,161.36, 43,002.36 and 19,219.92

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Solution

The fourth proportional to 31,161.36, 43,002.36 and 19,219.92 is: 26,523.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,161.36 : 43,002.36 = 19,219.92 : x
  2. Step 2: Convert to fraction form
    31,161.36/43,002.36 = 19,219.92/x
  3. Step 3: Cross multiply
    31,161.36x = 43,002.36 × 19,219.92
  4. Step 4: Simplify right side
    31,161.36x = 826,501,919.01
  5. Step 5: Solve for x
    x = 826,501,919.01/31,161.36
  6. Step 6: Final answer
    x = 26,523.29

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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.