Home / 37,109.78-51,213.93-20,971.43

Finding the Fourth Proportional to 37,109.78, 51,213.93 and 20,971.43

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Solution

The fourth proportional to 37,109.78, 51,213.93 and 20,971.43 is: 28,941.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    37,109.78 : 51,213.93 = 20,971.43 : x
  2. Step 2: Convert to fraction form
    37,109.78/51,213.93 = 20,971.43/x
  3. Step 3: Cross multiply
    37,109.78x = 51,213.93 × 20,971.43
  4. Step 4: Simplify right side
    37,109.78x = 1,074,029,348.02
  5. Step 5: Solve for x
    x = 1,074,029,348.02/37,109.78
  6. Step 6: Final answer
    x = 28,941.95

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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.