Home / 39,717.90-54,811.66-21,813.30

Finding the Fourth Proportional to 39,717.90, 54,811.66 and 21,813.30

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Solution

The fourth proportional to 39,717.90, 54,811.66 and 21,813.30 is: 30,102.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,717.90 : 54,811.66 = 21,813.30 : x
  2. Step 2: Convert to fraction form
    39,717.90/54,811.66 = 21,813.30/x
  3. Step 3: Cross multiply
    39,717.90x = 54,811.66 × 21,813.30
  4. Step 4: Simplify right side
    39,717.90x = 1,195,622,909.02
  5. Step 5: Solve for x
    x = 1,195,622,909.02/39,717.90
  6. Step 6: Final answer
    x = 30,102.87

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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.