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Finding the Fourth Proportional to 11,603.81, 17,420.18 and 11,550.50

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Solution

The fourth proportional to 11,603.81, 17,420.18 and 11,550.50 is: 17,340.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,603.81 : 17,420.18 = 11,550.50 : x
  2. Step 2: Convert to fraction form
    11,603.81/17,420.18 = 11,550.50/x
  3. Step 3: Cross multiply
    11,603.81x = 17,420.18 × 11,550.50
  4. Step 4: Simplify right side
    11,603.81x = 201,211,789.09
  5. Step 5: Solve for x
    x = 201,211,789.09/11,603.81
  6. Step 6: Final answer
    x = 17,340.15

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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.