Home / 11,218.87-16,808.55-9,997.15

Finding the Fourth Proportional to 11,218.87, 16,808.55 and 9,997.15

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Solution

The fourth proportional to 11,218.87, 16,808.55 and 9,997.15 is: 14,978.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,218.87 : 16,808.55 = 9,997.15 : x
  2. Step 2: Convert to fraction form
    11,218.87/16,808.55 = 9,997.15/x
  3. Step 3: Cross multiply
    11,218.87x = 16,808.55 × 9,997.15
  4. Step 4: Simplify right side
    11,218.87x = 168,037,595.63
  5. Step 5: Solve for x
    x = 168,037,595.63/11,218.87
  6. Step 6: Final answer
    x = 14,978.12

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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.