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Finding the Fourth Proportional to 9,118.60, 13,649.10 and 8,830.60

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Solution

The fourth proportional to 9,118.60, 13,649.10 and 8,830.60 is: 13,218.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,118.60 : 13,649.10 = 8,830.60 : x
  2. Step 2: Convert to fraction form
    9,118.60/13,649.10 = 8,830.60/x
  3. Step 3: Cross multiply
    9,118.60x = 13,649.10 × 8,830.60
  4. Step 4: Simplify right side
    9,118.60x = 120,529,742.46
  5. Step 5: Solve for x
    x = 120,529,742.46/9,118.60
  6. Step 6: Final answer
    x = 13,218.01

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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.