Home / 39,027.13-53,857.60-21,122.12

Finding the Fourth Proportional to 39,027.13, 53,857.60 and 21,122.12

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Solution

The fourth proportional to 39,027.13, 53,857.60 and 21,122.12 is: 29,148.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,027.13 : 53,857.60 = 21,122.12 : x
  2. Step 2: Convert to fraction form
    39,027.13/53,857.60 = 21,122.12/x
  3. Step 3: Cross multiply
    39,027.13x = 53,857.60 × 21,122.12
  4. Step 4: Simplify right side
    39,027.13x = 1,137,586,771.95
  5. Step 5: Solve for x
    x = 1,137,586,771.95/39,027.13
  6. Step 6: Final answer
    x = 29,148.62

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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.