Home / 31,682.55-43,718.95-18,933.20

Finding the Fourth Proportional to 31,682.55, 43,718.95 and 18,933.20

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Solution

The fourth proportional to 31,682.55, 43,718.95 and 18,933.20 is: 26,126.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,682.55 : 43,718.95 = 18,933.20 : x
  2. Step 2: Convert to fraction form
    31,682.55/43,718.95 = 18,933.20/x
  3. Step 3: Cross multiply
    31,682.55x = 43,718.95 × 18,933.20
  4. Step 4: Simplify right side
    31,682.55x = 827,739,624.14
  5. Step 5: Solve for x
    x = 827,739,624.14/31,682.55
  6. Step 6: Final answer
    x = 26,126.04

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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.