Home / 34,218.78-47,221.56-20,068.90

Finding the Fourth Proportional to 34,218.78, 47,221.56 and 20,068.90

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Solution

The fourth proportional to 34,218.78, 47,221.56 and 20,068.90 is: 27,694.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,218.78 : 47,221.56 = 20,068.90 : x
  2. Step 2: Convert to fraction form
    34,218.78/47,221.56 = 20,068.90/x
  3. Step 3: Cross multiply
    34,218.78x = 47,221.56 × 20,068.90
  4. Step 4: Simplify right side
    34,218.78x = 947,684,765.48
  5. Step 5: Solve for x
    x = 947,684,765.48/34,218.78
  6. Step 6: Final answer
    x = 27,694.87

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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.