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Finding the Fourth Proportional to 39,017.53, 53,844.02 and 21,112.85

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Solution

The fourth proportional to 39,017.53, 53,844.02 and 21,112.85 is: 29,135.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,017.53 : 53,844.02 = 21,112.85 : x
  2. Step 2: Convert to fraction form
    39,017.53/53,844.02 = 21,112.85/x
  3. Step 3: Cross multiply
    39,017.53x = 53,844.02 × 21,112.85
  4. Step 4: Simplify right side
    39,017.53x = 1,136,800,612.09
  5. Step 5: Solve for x
    x = 1,136,800,612.09/39,017.53
  6. Step 6: Final answer
    x = 29,135.64

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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.