Home / 11,320.66-16,980.98-9,639.15

Finding the Fourth Proportional to 11,320.66, 16,980.98 and 9,639.15

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Solution

The fourth proportional to 11,320.66, 16,980.98 and 9,639.15 is: 14,458.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,320.66 : 16,980.98 = 9,639.15 : x
  2. Step 2: Convert to fraction form
    11,320.66/16,980.98 = 9,639.15/x
  3. Step 3: Cross multiply
    11,320.66x = 16,980.98 × 9,639.15
  4. Step 4: Simplify right side
    11,320.66x = 163,682,197.01
  5. Step 5: Solve for x
    x = 163,682,197.01/11,320.66
  6. Step 6: Final answer
    x = 14,458.71

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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.