Home / 11,981.12-16,535.52-8,635.01

Finding the Fourth Proportional to 11,981.12, 16,535.52 and 8,635.01

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Solution

The fourth proportional to 11,981.12, 16,535.52 and 8,635.01 is: 11,917.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,981.12 : 16,535.52 = 8,635.01 : x
  2. Step 2: Convert to fraction form
    11,981.12/16,535.52 = 8,635.01/x
  3. Step 3: Cross multiply
    11,981.12x = 16,535.52 × 8,635.01
  4. Step 4: Simplify right side
    11,981.12x = 142,784,297.88
  5. Step 5: Solve for x
    x = 142,784,297.88/11,981.12
  6. Step 6: Final answer
    x = 11,917.45

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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.