Home / 34,285.40-47,314.20-20,138.48

Finding the Fourth Proportional to 34,285.40, 47,314.20 and 20,138.48

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Solution

The fourth proportional to 34,285.40, 47,314.20 and 20,138.48 is: 27,791.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,285.40 : 47,314.20 = 20,138.48 : x
  2. Step 2: Convert to fraction form
    34,285.40/47,314.20 = 20,138.48/x
  3. Step 3: Cross multiply
    34,285.40x = 47,314.20 × 20,138.48
  4. Step 4: Simplify right side
    34,285.40x = 952,836,070.42
  5. Step 5: Solve for x
    x = 952,836,070.42/34,285.40
  6. Step 6: Final answer
    x = 27,791.31

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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.