Home / 39,207.20-54,105.98-21,302.21

Finding the Fourth Proportional to 39,207.20, 54,105.98 and 21,302.21

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Solution

The fourth proportional to 39,207.20, 54,105.98 and 21,302.21 is: 29,397.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,207.20 : 54,105.98 = 21,302.21 : x
  2. Step 2: Convert to fraction form
    39,207.20/54,105.98 = 21,302.21/x
  3. Step 3: Cross multiply
    39,207.20x = 54,105.98 × 21,302.21
  4. Step 4: Simplify right side
    39,207.20x = 1,152,576,571.17
  5. Step 5: Solve for x
    x = 1,152,576,571.17/39,207.20
  6. Step 6: Final answer
    x = 29,397.07

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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.