Home / 31,669.86-43,705.08-18,936.21

Finding the Fourth Proportional to 31,669.86, 43,705.08 and 18,936.21

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Solution

The fourth proportional to 31,669.86, 43,705.08 and 18,936.21 is: 26,132.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,669.86 : 43,705.08 = 18,936.21 : x
  2. Step 2: Convert to fraction form
    31,669.86/43,705.08 = 18,936.21/x
  3. Step 3: Cross multiply
    31,669.86x = 43,705.08 × 18,936.21
  4. Step 4: Simplify right side
    31,669.86x = 827,608,572.95
  5. Step 5: Solve for x
    x = 827,608,572.95/31,669.86
  6. Step 6: Final answer
    x = 26,132.37

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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.