Home / 31,409.82-43,328.25-19,903.68

Finding the Fourth Proportional to 31,409.82, 43,328.25 and 19,903.68

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Solution

The fourth proportional to 31,409.82, 43,328.25 and 19,903.68 is: 27,456.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,409.82 : 43,328.25 = 19,903.68 : x
  2. Step 2: Convert to fraction form
    31,409.82/43,328.25 = 19,903.68/x
  3. Step 3: Cross multiply
    31,409.82x = 43,328.25 × 19,903.68
  4. Step 4: Simplify right side
    31,409.82x = 862,391,622.96
  5. Step 5: Solve for x
    x = 862,391,622.96/31,409.82
  6. Step 6: Final answer
    x = 27,456.11

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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.