Home / 39,014.20-53,839.22-21,108.81

Finding the Fourth Proportional to 39,014.20, 53,839.22 and 21,108.81

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Solution

The fourth proportional to 39,014.20, 53,839.22 and 21,108.81 is: 29,129.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,014.20 : 53,839.22 = 21,108.81 : x
  2. Step 2: Convert to fraction form
    39,014.20/53,839.22 = 21,108.81/x
  3. Step 3: Cross multiply
    39,014.20x = 53,839.22 × 21,108.81
  4. Step 4: Simplify right side
    39,014.20x = 1,136,481,961.88
  5. Step 5: Solve for x
    x = 1,136,481,961.88/39,014.20
  6. Step 6: Final answer
    x = 29,129.96

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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.