Home / 34,285.14-47,319.66-20,138.76

Finding the Fourth Proportional to 34,285.14, 47,319.66 and 20,138.76

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Solution

The fourth proportional to 34,285.14, 47,319.66 and 20,138.76 is: 27,795.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,285.14 : 47,319.66 = 20,138.76 : x
  2. Step 2: Convert to fraction form
    34,285.14/47,319.66 = 20,138.76/x
  3. Step 3: Cross multiply
    34,285.14x = 47,319.66 × 20,138.76
  4. Step 4: Simplify right side
    34,285.14x = 952,959,276.02
  5. Step 5: Solve for x
    x = 952,959,276.02/34,285.14
  6. Step 6: Final answer
    x = 27,795.11

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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.