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Finding the Fourth Proportional to 13,603.61, 20,405.16 and 5,596.62

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Solution

The fourth proportional to 13,603.61, 20,405.16 and 5,596.62 is: 8,394.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,603.61 : 20,405.16 = 5,596.62 : x
  2. Step 2: Convert to fraction form
    13,603.61/20,405.16 = 5,596.62/x
  3. Step 3: Cross multiply
    13,603.61x = 20,405.16 × 5,596.62
  4. Step 4: Simplify right side
    13,603.61x = 114,199,926.56
  5. Step 5: Solve for x
    x = 114,199,926.56/13,603.61
  6. Step 6: Final answer
    x = 8,394.83

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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.