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Finding the Fourth Proportional to 39,164.61, 54,048.14 and 21,259.61

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Solution

The fourth proportional to 39,164.61, 54,048.14 and 21,259.61 is: 29,338.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,164.61 : 54,048.14 = 21,259.61 : x
  2. Step 2: Convert to fraction form
    39,164.61/54,048.14 = 21,259.61/x
  3. Step 3: Cross multiply
    39,164.61x = 54,048.14 × 21,259.61
  4. Step 4: Simplify right side
    39,164.61x = 1,149,042,466.24
  5. Step 5: Solve for x
    x = 1,149,042,466.24/39,164.61
  6. Step 6: Final answer
    x = 29,338.80

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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.