Home / 30,439.55-41,991.92-19,103.45

Finding the Fourth Proportional to 30,439.55, 41,991.92 and 19,103.45

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Solution

The fourth proportional to 30,439.55, 41,991.92 and 19,103.45 is: 26,353.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,439.55 : 41,991.92 = 19,103.45 : x
  2. Step 2: Convert to fraction form
    30,439.55/41,991.92 = 19,103.45/x
  3. Step 3: Cross multiply
    30,439.55x = 41,991.92 × 19,103.45
  4. Step 4: Simplify right side
    30,439.55x = 802,190,310.29
  5. Step 5: Solve for x
    x = 802,190,310.29/30,439.55
  6. Step 6: Final answer
    x = 26,353.56

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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.