Home / 11,910.72-16,436.80-6,605.36

Finding the Fourth Proportional to 11,910.72, 16,436.80 and 6,605.36

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Solution

The fourth proportional to 11,910.72, 16,436.80 and 6,605.36 is: 9,115.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,910.72 : 16,436.80 = 6,605.36 : x
  2. Step 2: Convert to fraction form
    11,910.72/16,436.80 = 6,605.36/x
  3. Step 3: Cross multiply
    11,910.72x = 16,436.80 × 6,605.36
  4. Step 4: Simplify right side
    11,910.72x = 108,570,981.25
  5. Step 5: Solve for x
    x = 108,570,981.25/11,910.72
  6. Step 6: Final answer
    x = 9,115.40

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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.