Home / 31,699.08-43,753.46-18,961.02

Finding the Fourth Proportional to 31,699.08, 43,753.46 and 18,961.02

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Solution

The fourth proportional to 31,699.08, 43,753.46 and 18,961.02 is: 26,171.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,699.08 : 43,753.46 = 18,961.02 : x
  2. Step 2: Convert to fraction form
    31,699.08/43,753.46 = 18,961.02/x
  3. Step 3: Cross multiply
    31,699.08x = 43,753.46 × 18,961.02
  4. Step 4: Simplify right side
    31,699.08x = 829,610,135.32
  5. Step 5: Solve for x
    x = 829,610,135.32/31,699.08
  6. Step 6: Final answer
    x = 26,171.43

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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.