Home / 34,764.70-47,979.64-19,658.20

Finding the Fourth Proportional to 34,764.70, 47,979.64 and 19,658.20

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Solution

The fourth proportional to 34,764.70, 47,979.64 and 19,658.20 is: 27,130.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,764.70 : 47,979.64 = 19,658.20 : x
  2. Step 2: Convert to fraction form
    34,764.70/47,979.64 = 19,658.20/x
  3. Step 3: Cross multiply
    34,764.70x = 47,979.64 × 19,658.20
  4. Step 4: Simplify right side
    34,764.70x = 943,193,359.05
  5. Step 5: Solve for x
    x = 943,193,359.05/34,764.70
  6. Step 6: Final answer
    x = 27,130.78

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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.