Home / 39,625.24-54,684.21-21,720.23

Finding the Fourth Proportional to 39,625.24, 54,684.21 and 21,720.23

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Solution

The fourth proportional to 39,625.24, 54,684.21 and 21,720.23 is: 29,974.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,625.24 : 54,684.21 = 21,720.23 : x
  2. Step 2: Convert to fraction form
    39,625.24/54,684.21 = 21,720.23/x
  3. Step 3: Cross multiply
    39,625.24x = 54,684.21 × 21,720.23
  4. Step 4: Simplify right side
    39,625.24x = 1,187,753,618.57
  5. Step 5: Solve for x
    x = 1,187,753,618.57/39,625.24
  6. Step 6: Final answer
    x = 29,974.67

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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.