Home / 21,046.78-31,586.23-7,732.39

Finding the Fourth Proportional to 21,046.78, 31,586.23 and 7,732.39

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Solution

The fourth proportional to 21,046.78, 31,586.23 and 7,732.39 is: 11,604.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,046.78 : 31,586.23 = 7,732.39 : x
  2. Step 2: Convert to fraction form
    21,046.78/31,586.23 = 7,732.39/x
  3. Step 3: Cross multiply
    21,046.78x = 31,586.23 × 7,732.39
  4. Step 4: Simplify right side
    21,046.78x = 244,237,152.68
  5. Step 5: Solve for x
    x = 244,237,152.68/21,046.78
  6. Step 6: Final answer
    x = 11,604.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.