Home / 39,718.20-54,811.44-21,813.42

Finding the Fourth Proportional to 39,718.20, 54,811.44 and 21,813.42

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Solution

The fourth proportional to 39,718.20, 54,811.44 and 21,813.42 is: 30,102.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,718.20 : 54,811.44 = 21,813.42 : x
  2. Step 2: Convert to fraction form
    39,718.20/54,811.44 = 21,813.42/x
  3. Step 3: Cross multiply
    39,718.20x = 54,811.44 × 21,813.42
  4. Step 4: Simplify right side
    39,718.20x = 1,195,624,961.52
  5. Step 5: Solve for x
    x = 1,195,624,961.52/39,718.20
  6. Step 6: Final answer
    x = 30,102.70

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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.