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Finding the Fourth Proportional to 29,321.78, 40,457.00 and 17,388.05

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Solution

The fourth proportional to 29,321.78, 40,457.00 and 17,388.05 is: 23,991.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,321.78 : 40,457.00 = 17,388.05 : x
  2. Step 2: Convert to fraction form
    29,321.78/40,457.00 = 17,388.05/x
  3. Step 3: Cross multiply
    29,321.78x = 40,457.00 × 17,388.05
  4. Step 4: Simplify right side
    29,321.78x = 703,468,180.04
  5. Step 5: Solve for x
    x = 703,468,180.04/29,321.78
  6. Step 6: Final answer
    x = 23,991.32

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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.