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Finding the Fourth Proportional to 39,506.68, 54,520.01 and 21,602.80

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Solution

The fourth proportional to 39,506.68, 54,520.01 and 21,602.80 is: 29,812.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,506.68 : 54,520.01 = 21,602.80 : x
  2. Step 2: Convert to fraction form
    39,506.68/54,520.01 = 21,602.80/x
  3. Step 3: Cross multiply
    39,506.68x = 54,520.01 × 21,602.80
  4. Step 4: Simplify right side
    39,506.68x = 1,177,784,872.03
  5. Step 5: Solve for x
    x = 1,177,784,872.03/39,506.68
  6. Step 6: Final answer
    x = 29,812.30

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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.