Home / 31,409.19-43,329.92-18,662.76

Finding the Fourth Proportional to 31,409.19, 43,329.92 and 18,662.76

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Solution

The fourth proportional to 31,409.19, 43,329.92 and 18,662.76 is: 25,745.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,409.19 : 43,329.92 = 18,662.76 : x
  2. Step 2: Convert to fraction form
    31,409.19/43,329.92 = 18,662.76/x
  3. Step 3: Cross multiply
    31,409.19x = 43,329.92 × 18,662.76
  4. Step 4: Simplify right side
    31,409.19x = 808,655,681.13
  5. Step 5: Solve for x
    x = 808,655,681.13/31,409.19
  6. Step 6: Final answer
    x = 25,745.83

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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.