Home / 31,721.15-43,776.96-18,113.21

Finding the Fourth Proportional to 31,721.15, 43,776.96 and 18,113.21

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Solution

The fourth proportional to 31,721.15, 43,776.96 and 18,113.21 is: 24,997.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,721.15 : 43,776.96 = 18,113.21 : x
  2. Step 2: Convert to fraction form
    31,721.15/43,776.96 = 18,113.21/x
  3. Step 3: Cross multiply
    31,721.15x = 43,776.96 × 18,113.21
  4. Step 4: Simplify right side
    31,721.15x = 792,941,269.64
  5. Step 5: Solve for x
    x = 792,941,269.64/31,721.15
  6. Step 6: Final answer
    x = 24,997.24

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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.