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Finding the Fourth Proportional to 11,205.10, 16,807.65 and 7,487.20

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Solution

The fourth proportional to 11,205.10, 16,807.65 and 7,487.20 is: 11,230.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,205.10 : 16,807.65 = 7,487.20 : x
  2. Step 2: Convert to fraction form
    11,205.10/16,807.65 = 7,487.20/x
  3. Step 3: Cross multiply
    11,205.10x = 16,807.65 × 7,487.20
  4. Step 4: Simplify right side
    11,205.10x = 125,842,237.08
  5. Step 5: Solve for x
    x = 125,842,237.08/11,205.10
  6. Step 6: Final answer
    x = 11,230.80

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Similar ratio
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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.