Home / 21,149.44-29,172.99-13,605.59

Finding the Fourth Proportional to 21,149.44, 29,172.99 and 13,605.59

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Solution

The fourth proportional to 21,149.44, 29,172.99 and 13,605.59 is: 18,767.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.44 : 29,172.99 = 13,605.59 : x
  2. Step 2: Convert to fraction form
    21,149.44/29,172.99 = 13,605.59/x
  3. Step 3: Cross multiply
    21,149.44x = 29,172.99 × 13,605.59
  4. Step 4: Simplify right side
    21,149.44x = 396,915,741.01
  5. Step 5: Solve for x
    x = 396,915,741.01/21,149.44
  6. Step 6: Final answer
    x = 18,767.20

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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.