Home / 29,119.61-40,131.77-21,147.99

Finding the Fourth Proportional to 29,119.61, 40,131.77 and 21,147.99

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Solution

The fourth proportional to 29,119.61, 40,131.77 and 21,147.99 is: 29,145.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,119.61 : 40,131.77 = 21,147.99 : x
  2. Step 2: Convert to fraction form
    29,119.61/40,131.77 = 21,147.99/x
  3. Step 3: Cross multiply
    29,119.61x = 40,131.77 × 21,147.99
  4. Step 4: Simplify right side
    29,119.61x = 848,706,164.90
  5. Step 5: Solve for x
    x = 848,706,164.90/29,119.61
  6. Step 6: Final answer
    x = 29,145.52

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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.