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Finding the Fourth Proportional to 39,017.48, 53,844.04 and 21,112.48

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Solution

The fourth proportional to 39,017.48, 53,844.04 and 21,112.48 is: 29,135.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,017.48 : 53,844.04 = 21,112.48 : x
  2. Step 2: Convert to fraction form
    39,017.48/53,844.04 = 21,112.48/x
  3. Step 3: Cross multiply
    39,017.48x = 53,844.04 × 21,112.48
  4. Step 4: Simplify right side
    39,017.48x = 1,136,781,311.31
  5. Step 5: Solve for x
    x = 1,136,781,311.31/39,017.48
  6. Step 6: Final answer
    x = 29,135.18

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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.