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Finding the Fourth Proportional to 29,057.88, 40,085 and 18,992.22

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Solution

The fourth proportional to 29,057.88, 40,085 and 18,992.22 is: 26,199.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,057.88 : 40,085 = 18,992.22 : x
  2. Step 2: Convert to fraction form
    29,057.88/40,085 = 18,992.22/x
  3. Step 3: Cross multiply
    29,057.88x = 40,085 × 18,992.22
  4. Step 4: Simplify right side
    29,057.88x = 761,303,138.70
  5. Step 5: Solve for x
    x = 761,303,138.70/29,057.88
  6. Step 6: Final answer
    x = 26,199.54

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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.