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Finding the Fourth Proportional to 11,045.70, 16,568.55 and 7,109.10

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Solution

The fourth proportional to 11,045.70, 16,568.55 and 7,109.10 is: 10,663.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,045.70 : 16,568.55 = 7,109.10 : x
  2. Step 2: Convert to fraction form
    11,045.70/16,568.55 = 7,109.10/x
  3. Step 3: Cross multiply
    11,045.70x = 16,568.55 × 7,109.10
  4. Step 4: Simplify right side
    11,045.70x = 117,787,478.81
  5. Step 5: Solve for x
    x = 117,787,478.81/11,045.70
  6. Step 6: Final answer
    x = 10,663.65

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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.