Home / 39,213.28-54,114.08-21,308

Finding the Fourth Proportional to 39,213.28, 54,114.08 and 21,308

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Solution

The fourth proportional to 39,213.28, 54,114.08 and 21,308 is: 29,404.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,213.28 : 54,114.08 = 21,308 : x
  2. Step 2: Convert to fraction form
    39,213.28/54,114.08 = 21,308/x
  3. Step 3: Cross multiply
    39,213.28x = 54,114.08 × 21,308
  4. Step 4: Simplify right side
    39,213.28x = 1,153,062,816.64
  5. Step 5: Solve for x
    x = 1,153,062,816.64/39,213.28
  6. Step 6: Final answer
    x = 29,404.91

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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.