Home / 31,363.87-43,290.44-19,420.42

Finding the Fourth Proportional to 31,363.87, 43,290.44 and 19,420.42

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Solution

The fourth proportional to 31,363.87, 43,290.44 and 19,420.42 is: 26,805.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,363.87 : 43,290.44 = 19,420.42 : x
  2. Step 2: Convert to fraction form
    31,363.87/43,290.44 = 19,420.42/x
  3. Step 3: Cross multiply
    31,363.87x = 43,290.44 × 19,420.42
  4. Step 4: Simplify right side
    31,363.87x = 840,718,556.62
  5. Step 5: Solve for x
    x = 840,718,556.62/31,363.87
  6. Step 6: Final answer
    x = 26,805.32

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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.