Home / 13,276.62-18,320.67-7,687.98

Finding the Fourth Proportional to 13,276.62, 18,320.67 and 7,687.98

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Solution

The fourth proportional to 13,276.62, 18,320.67 and 7,687.98 is: 10,608.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,276.62 : 18,320.67 = 7,687.98 : x
  2. Step 2: Convert to fraction form
    13,276.62/18,320.67 = 7,687.98/x
  3. Step 3: Cross multiply
    13,276.62x = 18,320.67 × 7,687.98
  4. Step 4: Simplify right side
    13,276.62x = 140,848,944.55
  5. Step 5: Solve for x
    x = 140,848,944.55/13,276.62
  6. Step 6: Final answer
    x = 10,608.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.