Home / 21,347.91-29,461.11-11,789.15

Finding the Fourth Proportional to 21,347.91, 29,461.11 and 11,789.15

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Solution

The fourth proportional to 21,347.91, 29,461.11 and 11,789.15 is: 16,269.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,347.91 : 29,461.11 = 11,789.15 : x
  2. Step 2: Convert to fraction form
    21,347.91/29,461.11 = 11,789.15/x
  3. Step 3: Cross multiply
    21,347.91x = 29,461.11 × 11,789.15
  4. Step 4: Simplify right side
    21,347.91x = 347,321,297.65
  5. Step 5: Solve for x
    x = 347,321,297.65/21,347.91
  6. Step 6: Final answer
    x = 16,269.57

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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.