Home / 21,288.34-29,375.67-12,338.65

Finding the Fourth Proportional to 21,288.34, 29,375.67 and 12,338.65

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Solution

The fourth proportional to 21,288.34, 29,375.67 and 12,338.65 is: 17,026.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,288.34 : 29,375.67 = 12,338.65 : x
  2. Step 2: Convert to fraction form
    21,288.34/29,375.67 = 12,338.65/x
  3. Step 3: Cross multiply
    21,288.34x = 29,375.67 × 12,338.65
  4. Step 4: Simplify right side
    21,288.34x = 362,456,110.65
  5. Step 5: Solve for x
    x = 362,456,110.65/21,288.34
  6. Step 6: Final answer
    x = 17,026.04

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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.