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Finding the Fourth Proportional to 18,018.78, 24,866.75 and 9,953.56

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Solution

The fourth proportional to 18,018.78, 24,866.75 and 9,953.56 is: 13,736.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,018.78 : 24,866.75 = 9,953.56 : x
  2. Step 2: Convert to fraction form
    18,018.78/24,866.75 = 9,953.56/x
  3. Step 3: Cross multiply
    18,018.78x = 24,866.75 × 9,953.56
  4. Step 4: Simplify right side
    18,018.78x = 247,512,548.23
  5. Step 5: Solve for x
    x = 247,512,548.23/18,018.78
  6. Step 6: Final answer
    x = 13,736.37

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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.