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Finding the Fourth Proportional to 39,652.54, 54,722.08 and 21,748.20

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Solution

The fourth proportional to 39,652.54, 54,722.08 and 21,748.20 is: 30,013.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,652.54 : 54,722.08 = 21,748.20 : x
  2. Step 2: Convert to fraction form
    39,652.54/54,722.08 = 21,748.20/x
  3. Step 3: Cross multiply
    39,652.54x = 54,722.08 × 21,748.20
  4. Step 4: Simplify right side
    39,652.54x = 1,190,106,740.26
  5. Step 5: Solve for x
    x = 1,190,106,740.26/39,652.54
  6. Step 6: Final answer
    x = 30,013.38

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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.