Home / 30,938.73-42,695.18-16,791.57

Finding the Fourth Proportional to 30,938.73, 42,695.18 and 16,791.57

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Solution

The fourth proportional to 30,938.73, 42,695.18 and 16,791.57 is: 23,172.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,938.73 : 42,695.18 = 16,791.57 : x
  2. Step 2: Convert to fraction form
    30,938.73/42,695.18 = 16,791.57/x
  3. Step 3: Cross multiply
    30,938.73x = 42,695.18 × 16,791.57
  4. Step 4: Simplify right side
    30,938.73x = 716,919,103.63
  5. Step 5: Solve for x
    x = 716,919,103.63/30,938.73
  6. Step 6: Final answer
    x = 23,172.22

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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.