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Finding the Fourth Proportional to 10,679.76, 16,018.20 and 2,887.92

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Solution

The fourth proportional to 10,679.76, 16,018.20 and 2,887.92 is: 4,331.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,679.76 : 16,018.20 = 2,887.92 : x
  2. Step 2: Convert to fraction form
    10,679.76/16,018.20 = 2,887.92/x
  3. Step 3: Cross multiply
    10,679.76x = 16,018.20 × 2,887.92
  4. Step 4: Simplify right side
    10,679.76x = 46,259,280.14
  5. Step 5: Solve for x
    x = 46,259,280.14/10,679.76
  6. Step 6: Final answer
    x = 4,331.49

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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.