Home / 30,938.72-42,695.16-16,791.44

Finding the Fourth Proportional to 30,938.72, 42,695.16 and 16,791.44

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Solution

The fourth proportional to 30,938.72, 42,695.16 and 16,791.44 is: 23,172.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,938.72 : 42,695.16 = 16,791.44 : x
  2. Step 2: Convert to fraction form
    30,938.72/42,695.16 = 16,791.44/x
  3. Step 3: Cross multiply
    30,938.72x = 42,695.16 × 16,791.44
  4. Step 4: Simplify right side
    30,938.72x = 716,913,217.43
  5. Step 5: Solve for x
    x = 716,913,217.43/30,938.72
  6. Step 6: Final answer
    x = 23,172.04

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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.