Home / 34,279.67-51,435.30-21,123.65

Finding the Fourth Proportional to 34,279.67, 51,435.30 and 21,123.65

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Solution

The fourth proportional to 34,279.67, 51,435.30 and 21,123.65 is: 31,695.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,279.67 : 51,435.30 = 21,123.65 : x
  2. Step 2: Convert to fraction form
    34,279.67/51,435.30 = 21,123.65/x
  3. Step 3: Cross multiply
    34,279.67x = 51,435.30 × 21,123.65
  4. Step 4: Simplify right side
    34,279.67x = 1,086,501,274.85
  5. Step 5: Solve for x
    x = 1,086,501,274.85/34,279.67
  6. Step 6: Final answer
    x = 31,695.21

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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.