Home / 13,486.62-20,212.47-9,319.98

Finding the Fourth Proportional to 13,486.62, 20,212.47 and 9,319.98

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Solution

The fourth proportional to 13,486.62, 20,212.47 and 9,319.98 is: 13,967.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,486.62 : 20,212.47 = 9,319.98 : x
  2. Step 2: Convert to fraction form
    13,486.62/20,212.47 = 9,319.98/x
  3. Step 3: Cross multiply
    13,486.62x = 20,212.47 × 9,319.98
  4. Step 4: Simplify right side
    13,486.62x = 188,379,816.15
  5. Step 5: Solve for x
    x = 188,379,816.15/13,486.62
  6. Step 6: Final answer
    x = 13,967.90

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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.