Home / 13,415.62-18,500.67-8,037.21

Finding the Fourth Proportional to 13,415.62, 18,500.67 and 8,037.21

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Solution

The fourth proportional to 13,415.62, 18,500.67 and 8,037.21 is: 11,083.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,415.62 : 18,500.67 = 8,037.21 : x
  2. Step 2: Convert to fraction form
    13,415.62/18,500.67 = 8,037.21/x
  3. Step 3: Cross multiply
    13,415.62x = 18,500.67 × 8,037.21
  4. Step 4: Simplify right side
    13,415.62x = 148,693,769.93
  5. Step 5: Solve for x
    x = 148,693,769.93/13,415.62
  6. Step 6: Final answer
    x = 11,083.63

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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.