Home / 39,285.14-54,213.64-21,380.11

Finding the Fourth Proportional to 39,285.14, 54,213.64 and 21,380.11

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Solution

The fourth proportional to 39,285.14, 54,213.64 and 21,380.11 is: 29,504.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,285.14 : 54,213.64 = 21,380.11 : x
  2. Step 2: Convert to fraction form
    39,285.14/54,213.64 = 21,380.11/x
  3. Step 3: Cross multiply
    39,285.14x = 54,213.64 × 21,380.11
  4. Step 4: Simplify right side
    39,285.14x = 1,159,093,397.72
  5. Step 5: Solve for x
    x = 1,159,093,397.72/39,285.14
  6. Step 6: Final answer
    x = 29,504.63

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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.