Home / 29,122.61-40,135.91-21,150.99

Finding the Fourth Proportional to 29,122.61, 40,135.91 and 21,150.99

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Solution

The fourth proportional to 29,122.61, 40,135.91 and 21,150.99 is: 29,149.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,122.61 : 40,135.91 = 21,150.99 : x
  2. Step 2: Convert to fraction form
    29,122.61/40,135.91 = 21,150.99/x
  3. Step 3: Cross multiply
    29,122.61x = 40,135.91 × 21,150.99
  4. Step 4: Simplify right side
    29,122.61x = 848,914,125.30
  5. Step 5: Solve for x
    x = 848,914,125.30/29,122.61
  6. Step 6: Final answer
    x = 29,149.66

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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.