Home / 37,110.78-51,215.31-20,972.43

Finding the Fourth Proportional to 37,110.78, 51,215.31 and 20,972.43

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Solution

The fourth proportional to 37,110.78, 51,215.31 and 20,972.43 is: 28,943.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,110.78 : 51,215.31 = 20,972.43 : x
  2. Step 2: Convert to fraction form
    37,110.78/51,215.31 = 20,972.43/x
  3. Step 3: Cross multiply
    37,110.78x = 51,215.31 × 20,972.43
  4. Step 4: Simplify right side
    37,110.78x = 1,074,109,503.90
  5. Step 5: Solve for x
    x = 1,074,109,503.90/37,110.78
  6. Step 6: Final answer
    x = 28,943.33

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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.