Home / 21,214.44-29,229.33-15,813.90

Finding the Fourth Proportional to 21,214.44, 29,229.33 and 15,813.90

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Solution

The fourth proportional to 21,214.44, 29,229.33 and 15,813.90 is: 21,788.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,214.44 : 29,229.33 = 15,813.90 : x
  2. Step 2: Convert to fraction form
    21,214.44/29,229.33 = 15,813.90/x
  3. Step 3: Cross multiply
    21,214.44x = 29,229.33 × 15,813.90
  4. Step 4: Simplify right side
    21,214.44x = 462,229,701.69
  5. Step 5: Solve for x
    x = 462,229,701.69/21,214.44
  6. Step 6: Final answer
    x = 21,788.45

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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.