Home / 31,622.78-43,631.92-19,679.74

Finding the Fourth Proportional to 31,622.78, 43,631.92 and 19,679.74

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Solution

The fourth proportional to 31,622.78, 43,631.92 and 19,679.74 is: 27,153.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,622.78 : 43,631.92 = 19,679.74 : x
  2. Step 2: Convert to fraction form
    31,622.78/43,631.92 = 19,679.74/x
  3. Step 3: Cross multiply
    31,622.78x = 43,631.92 × 19,679.74
  4. Step 4: Simplify right side
    31,622.78x = 858,664,841.30
  5. Step 5: Solve for x
    x = 858,664,841.30/31,622.78
  6. Step 6: Final answer
    x = 27,153.36

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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.