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Finding the Fourth Proportional to 29,287.31, 40,422.44 and 19,858.91

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Solution

The fourth proportional to 29,287.31, 40,422.44 and 19,858.91 is: 27,409.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,287.31 : 40,422.44 = 19,858.91 : x
  2. Step 2: Convert to fraction form
    29,287.31/40,422.44 = 19,858.91/x
  3. Step 3: Cross multiply
    29,287.31x = 40,422.44 × 19,858.91
  4. Step 4: Simplify right side
    29,287.31x = 802,745,597.94
  5. Step 5: Solve for x
    x = 802,745,597.94/29,287.31
  6. Step 6: Final answer
    x = 27,409.33

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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.