Home / 39,766.19-54,875.03-21,861.20

Finding the Fourth Proportional to 39,766.19, 54,875.03 and 21,861.20

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Solution

The fourth proportional to 39,766.19, 54,875.03 and 21,861.20 is: 30,167.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,766.19 : 54,875.03 = 21,861.20 : x
  2. Step 2: Convert to fraction form
    39,766.19/54,875.03 = 21,861.20/x
  3. Step 3: Cross multiply
    39,766.19x = 54,875.03 × 21,861.20
  4. Step 4: Simplify right side
    39,766.19x = 1,199,633,786.11
  5. Step 5: Solve for x
    x = 1,199,633,786.11/39,766.19
  6. Step 6: Final answer
    x = 30,167.18

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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.