Home / 31,803.84-43,884.18-18,376.87

Finding the Fourth Proportional to 31,803.84, 43,884.18 and 18,376.87

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Solution

The fourth proportional to 31,803.84, 43,884.18 and 18,376.87 is: 25,357.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,803.84 : 43,884.18 = 18,376.87 : x
  2. Step 2: Convert to fraction form
    31,803.84/43,884.18 = 18,376.87/x
  3. Step 3: Cross multiply
    31,803.84x = 43,884.18 × 18,376.87
  4. Step 4: Simplify right side
    31,803.84x = 806,453,870.92
  5. Step 5: Solve for x
    x = 806,453,870.92/31,803.84
  6. Step 6: Final answer
    x = 25,357.12

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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.