Home / 21,217.26-29,281.02-11,788.86

Finding the Fourth Proportional to 21,217.26, 29,281.02 and 11,788.86

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Solution

The fourth proportional to 21,217.26, 29,281.02 and 11,788.86 is: 16,269.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.26 : 29,281.02 = 11,788.86 : x
  2. Step 2: Convert to fraction form
    21,217.26/29,281.02 = 11,788.86/x
  3. Step 3: Cross multiply
    21,217.26x = 29,281.02 × 11,788.86
  4. Step 4: Simplify right side
    21,217.26x = 345,189,845.44
  5. Step 5: Solve for x
    x = 345,189,845.44/21,217.26
  6. Step 6: Final answer
    x = 16,269.29

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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.