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Finding the Fourth Proportional to 11,297.80, 16,962.90 and 8,835.40

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Solution

The fourth proportional to 11,297.80, 16,962.90 and 8,835.40 is: 13,265.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,297.80 : 16,962.90 = 8,835.40 : x
  2. Step 2: Convert to fraction form
    11,297.80/16,962.90 = 8,835.40/x
  3. Step 3: Cross multiply
    11,297.80x = 16,962.90 × 8,835.40
  4. Step 4: Simplify right side
    11,297.80x = 149,874,006.66
  5. Step 5: Solve for x
    x = 149,874,006.66/11,297.80
  6. Step 6: Final answer
    x = 13,265.77

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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.