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Finding the Fourth Proportional to 39,052.88, 53,892.94 and 21,147.88

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Solution

The fourth proportional to 39,052.88, 53,892.94 and 21,147.88 is: 29,184.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,052.88 : 53,892.94 = 21,147.88 : x
  2. Step 2: Convert to fraction form
    39,052.88/53,892.94 = 21,147.88/x
  3. Step 3: Cross multiply
    39,052.88x = 53,892.94 × 21,147.88
  4. Step 4: Simplify right side
    39,052.88x = 1,139,721,427.97
  5. Step 5: Solve for x
    x = 1,139,721,427.97/39,052.88
  6. Step 6: Final answer
    x = 29,184.06

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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.