Home / 30,439.18-41,971.88-19,669.88

Finding the Fourth Proportional to 30,439.18, 41,971.88 and 19,669.88

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Solution

The fourth proportional to 30,439.18, 41,971.88 and 19,669.88 is: 27,122.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,439.18 : 41,971.88 = 19,669.88 : x
  2. Step 2: Convert to fraction form
    30,439.18/41,971.88 = 19,669.88/x
  3. Step 3: Cross multiply
    30,439.18x = 41,971.88 × 19,669.88
  4. Step 4: Simplify right side
    30,439.18x = 825,581,842.97
  5. Step 5: Solve for x
    x = 825,581,842.97/30,439.18
  6. Step 6: Final answer
    x = 27,122.34

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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.