Home / 39,027.28-53,857.64-21,122.42

Finding the Fourth Proportional to 39,027.28, 53,857.64 and 21,122.42

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Solution

The fourth proportional to 39,027.28, 53,857.64 and 21,122.42 is: 29,148.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,027.28 : 53,857.64 = 21,122.42 : x
  2. Step 2: Convert to fraction form
    39,027.28/53,857.64 = 21,122.42/x
  3. Step 3: Cross multiply
    39,027.28x = 53,857.64 × 21,122.42
  4. Step 4: Simplify right side
    39,027.28x = 1,137,603,692.29
  5. Step 5: Solve for x
    x = 1,137,603,692.29/39,027.28
  6. Step 6: Final answer
    x = 29,148.94

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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.