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Finding the Fourth Proportional to 8,800.36, 13,122.88 and 8,721.36

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Solution

The fourth proportional to 8,800.36, 13,122.88 and 8,721.36 is: 13,005.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,800.36 : 13,122.88 = 8,721.36 : x
  2. Step 2: Convert to fraction form
    8,800.36/13,122.88 = 8,721.36/x
  3. Step 3: Cross multiply
    8,800.36x = 13,122.88 × 8,721.36
  4. Step 4: Simplify right side
    8,800.36x = 114,449,360.72
  5. Step 5: Solve for x
    x = 114,449,360.72/8,800.36
  6. Step 6: Final answer
    x = 13,005.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.