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Finding the Fourth Proportional to 18,735.88, 25,856 and 10,238.36

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Solution

The fourth proportional to 18,735.88, 25,856 and 10,238.36 is: 14,129.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,735.88 : 25,856 = 10,238.36 : x
  2. Step 2: Convert to fraction form
    18,735.88/25,856 = 10,238.36/x
  3. Step 3: Cross multiply
    18,735.88x = 25,856 × 10,238.36
  4. Step 4: Simplify right side
    18,735.88x = 264,723,036.16
  5. Step 5: Solve for x
    x = 264,723,036.16/18,735.88
  6. Step 6: Final answer
    x = 14,129.20

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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.