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Finding the Fourth Proportional to 11,161.50, 16,742.25 and 2,953.50

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Solution

The fourth proportional to 11,161.50, 16,742.25 and 2,953.50 is: 4,430.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,161.50 : 16,742.25 = 2,953.50 : x
  2. Step 2: Convert to fraction form
    11,161.50/16,742.25 = 2,953.50/x
  3. Step 3: Cross multiply
    11,161.50x = 16,742.25 × 2,953.50
  4. Step 4: Simplify right side
    11,161.50x = 49,448,235.38
  5. Step 5: Solve for x
    x = 49,448,235.38/11,161.50
  6. Step 6: Final answer
    x = 4,430.25

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Double scale
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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.