Home / 11,392.32-15,721.77-6,611.90

Finding the Fourth Proportional to 11,392.32, 15,721.77 and 6,611.90

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Solution

The fourth proportional to 11,392.32, 15,721.77 and 6,611.90 is: 9,124.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,392.32 : 15,721.77 = 6,611.90 : x
  2. Step 2: Convert to fraction form
    11,392.32/15,721.77 = 6,611.90/x
  3. Step 3: Cross multiply
    11,392.32x = 15,721.77 × 6,611.90
  4. Step 4: Simplify right side
    11,392.32x = 103,950,771.06
  5. Step 5: Solve for x
    x = 103,950,771.06/11,392.32
  6. Step 6: Final answer
    x = 9,124.64

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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.