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Finding the Fourth Proportional to 13,009.66, 19,511.01 and 3,649.12

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Solution

The fourth proportional to 13,009.66, 19,511.01 and 3,649.12 is: 5,472.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,009.66 : 19,511.01 = 3,649.12 : x
  2. Step 2: Convert to fraction form
    13,009.66/19,511.01 = 3,649.12/x
  3. Step 3: Cross multiply
    13,009.66x = 19,511.01 × 3,649.12
  4. Step 4: Simplify right side
    13,009.66x = 71,198,016.81
  5. Step 5: Solve for x
    x = 71,198,016.81/13,009.66
  6. Step 6: Final answer
    x = 5,472.70

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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.