Home / 31,008.60-42,791.38-16,861.32

Finding the Fourth Proportional to 31,008.60, 42,791.38 and 16,861.32

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Solution

The fourth proportional to 31,008.60, 42,791.38 and 16,861.32 is: 23,268.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,008.60 : 42,791.38 = 16,861.32 : x
  2. Step 2: Convert to fraction form
    31,008.60/42,791.38 = 16,861.32/x
  3. Step 3: Cross multiply
    31,008.60x = 42,791.38 × 16,861.32
  4. Step 4: Simplify right side
    31,008.60x = 721,519,151.42
  5. Step 5: Solve for x
    x = 721,519,151.42/31,008.60
  6. Step 6: Final answer
    x = 23,268.36

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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.