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Finding the Fourth Proportional to 11,101.60, 16,603.80 and 8,477.20

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Solution

The fourth proportional to 11,101.60, 16,603.80 and 8,477.20 is: 12,678.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,101.60 : 16,603.80 = 8,477.20 : x
  2. Step 2: Convert to fraction form
    11,101.60/16,603.80 = 8,477.20/x
  3. Step 3: Cross multiply
    11,101.60x = 16,603.80 × 8,477.20
  4. Step 4: Simplify right side
    11,101.60x = 140,753,733.36
  5. Step 5: Solve for x
    x = 140,753,733.36/11,101.60
  6. Step 6: Final answer
    x = 12,678.69

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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.