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Finding the Fourth Proportional to 39,297.04, 54,230.04 and 21,392.20

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Solution

The fourth proportional to 39,297.04, 54,230.04 and 21,392.20 is: 29,521.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,297.04 : 54,230.04 = 21,392.20 : x
  2. Step 2: Convert to fraction form
    39,297.04/54,230.04 = 21,392.20/x
  3. Step 3: Cross multiply
    39,297.04x = 54,230.04 × 21,392.20
  4. Step 4: Simplify right side
    39,297.04x = 1,160,099,861.69
  5. Step 5: Solve for x
    x = 1,160,099,861.69/39,297.04
  6. Step 6: Final answer
    x = 29,521.30

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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.