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Finding the Fourth Proportional to 29,642.41, 40,887.75 and 19,968.31

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Solution

The fourth proportional to 29,642.41, 40,887.75 and 19,968.31 is: 27,543.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,642.41 : 40,887.75 = 19,968.31 : x
  2. Step 2: Convert to fraction form
    29,642.41/40,887.75 = 19,968.31/x
  3. Step 3: Cross multiply
    29,642.41x = 40,887.75 × 19,968.31
  4. Step 4: Simplify right side
    29,642.41x = 816,459,267.20
  5. Step 5: Solve for x
    x = 816,459,267.20/29,642.41
  6. Step 6: Final answer
    x = 27,543.62

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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.