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Finding the Fourth Proportional to 11,153.60, 16,701.60 and 8,830.40

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Solution

The fourth proportional to 11,153.60, 16,701.60 and 8,830.40 is: 13,222.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.60 : 16,701.60 = 8,830.40 : x
  2. Step 2: Convert to fraction form
    11,153.60/16,701.60 = 8,830.40/x
  3. Step 3: Cross multiply
    11,153.60x = 16,701.60 × 8,830.40
  4. Step 4: Simplify right side
    11,153.60x = 147,481,808.64
  5. Step 5: Solve for x
    x = 147,481,808.64/11,153.60
  6. Step 6: Final answer
    x = 13,222.80

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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.