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Finding the Fourth Proportional to 18,782.73, 25,919.36 and 10,284.70

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Solution

The fourth proportional to 18,782.73, 25,919.36 and 10,284.70 is: 14,192.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,782.73 : 25,919.36 = 10,284.70 : x
  2. Step 2: Convert to fraction form
    18,782.73/25,919.36 = 10,284.70/x
  3. Step 3: Cross multiply
    18,782.73x = 25,919.36 × 10,284.70
  4. Step 4: Simplify right side
    18,782.73x = 266,572,712.20
  5. Step 5: Solve for x
    x = 266,572,712.20/18,782.73
  6. Step 6: Final answer
    x = 14,192.44

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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.