Home / 34,393.31-47,471.21-20,971.96

Finding the Fourth Proportional to 34,393.31, 47,471.21 and 20,971.96

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Solution

The fourth proportional to 34,393.31, 47,471.21 and 20,971.96 is: 28,946.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,393.31 : 47,471.21 = 20,971.96 : x
  2. Step 2: Convert to fraction form
    34,393.31/47,471.21 = 20,971.96/x
  3. Step 3: Cross multiply
    34,393.31x = 47,471.21 × 20,971.96
  4. Step 4: Simplify right side
    34,393.31x = 995,563,975.06
  5. Step 5: Solve for x
    x = 995,563,975.06/34,393.31
  6. Step 6: Final answer
    x = 28,946.44

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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.