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Finding the Fourth Proportional to 35,489.97, 53,239.86 and 12,997.71

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Solution

The fourth proportional to 35,489.97, 53,239.86 and 12,997.71 is: 19,498.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,489.97 : 53,239.86 = 12,997.71 : x
  2. Step 2: Convert to fraction form
    35,489.97/53,239.86 = 12,997.71/x
  3. Step 3: Cross multiply
    35,489.97x = 53,239.86 × 12,997.71
  4. Step 4: Simplify right side
    35,489.97x = 691,996,260.72
  5. Step 5: Solve for x
    x = 691,996,260.72/35,489.97
  6. Step 6: Final answer
    x = 19,498.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.