Home / 11,153.39-16,732.88-7,872.89

Finding the Fourth Proportional to 11,153.39, 16,732.88 and 7,872.89

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Solution

The fourth proportional to 11,153.39, 16,732.88 and 7,872.89 is: 11,811.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,153.39 : 16,732.88 = 7,872.89 : x
  2. Step 2: Convert to fraction form
    11,153.39/16,732.88 = 7,872.89/x
  3. Step 3: Cross multiply
    11,153.39x = 16,732.88 × 7,872.89
  4. Step 4: Simplify right side
    11,153.39x = 131,736,030.12
  5. Step 5: Solve for x
    x = 131,736,030.12/11,153.39
  6. Step 6: Final answer
    x = 11,811.30

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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.