Home / 31,806.19-43,889.29-18,381.79

Finding the Fourth Proportional to 31,806.19, 43,889.29 and 18,381.79

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Solution

The fourth proportional to 31,806.19, 43,889.29 and 18,381.79 is: 25,364.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,806.19 : 43,889.29 = 18,381.79 : x
  2. Step 2: Convert to fraction form
    31,806.19/43,889.29 = 18,381.79/x
  3. Step 3: Cross multiply
    31,806.19x = 43,889.29 × 18,381.79
  4. Step 4: Simplify right side
    31,806.19x = 806,763,712.03
  5. Step 5: Solve for x
    x = 806,763,712.03/31,806.19
  6. Step 6: Final answer
    x = 25,364.99

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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.