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Finding the Fourth Proportional to 39,023.19, 53,852.13 and 21,118.19

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Solution

The fourth proportional to 39,023.19, 53,852.13 and 21,118.19 is: 29,143.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,023.19 : 53,852.13 = 21,118.19 : x
  2. Step 2: Convert to fraction form
    39,023.19/53,852.13 = 21,118.19/x
  3. Step 3: Cross multiply
    39,023.19x = 53,852.13 × 21,118.19
  4. Step 4: Simplify right side
    39,023.19x = 1,137,259,513.24
  5. Step 5: Solve for x
    x = 1,137,259,513.24/39,023.19
  6. Step 6: Final answer
    x = 29,143.17

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.