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Finding the Fourth Proportional to 18,393.88, 25,383.62 and 10,010.38

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Solution

The fourth proportional to 18,393.88, 25,383.62 and 10,010.38 is: 13,814.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,393.88 : 25,383.62 = 10,010.38 : x
  2. Step 2: Convert to fraction form
    18,393.88/25,383.62 = 10,010.38/x
  3. Step 3: Cross multiply
    18,393.88x = 25,383.62 × 10,010.38
  4. Step 4: Simplify right side
    18,393.88x = 254,099,681.98
  5. Step 5: Solve for x
    x = 254,099,681.98/18,393.88
  6. Step 6: Final answer
    x = 13,814.36

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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.