Home / 39,027.68-53,857.88-21,122.32

Finding the Fourth Proportional to 39,027.68, 53,857.88 and 21,122.32

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Solution

The fourth proportional to 39,027.68, 53,857.88 and 21,122.32 is: 29,148.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,027.68 : 53,857.88 = 21,122.32 : x
  2. Step 2: Convert to fraction form
    39,027.68/53,857.88 = 21,122.32/x
  3. Step 3: Cross multiply
    39,027.68x = 53,857.88 × 21,122.32
  4. Step 4: Simplify right side
    39,027.68x = 1,137,603,375.88
  5. Step 5: Solve for x
    x = 1,137,603,375.88/39,027.68
  6. Step 6: Final answer
    x = 29,148.63

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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.