Home / 30,838.11-42,557.36-18,908.02

Finding the Fourth Proportional to 30,838.11, 42,557.36 and 18,908.02

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Solution

The fourth proportional to 30,838.11, 42,557.36 and 18,908.02 is: 26,093.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,838.11 : 42,557.36 = 18,908.02 : x
  2. Step 2: Convert to fraction form
    30,838.11/42,557.36 = 18,908.02/x
  3. Step 3: Cross multiply
    30,838.11x = 42,557.36 × 18,908.02
  4. Step 4: Simplify right side
    30,838.11x = 804,675,414.03
  5. Step 5: Solve for x
    x = 804,675,414.03/30,838.11
  6. Step 6: Final answer
    x = 26,093.54

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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.