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Finding the Fourth Proportional to 8,999.91, 13,416.44 and 8,857.76

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Solution

The fourth proportional to 8,999.91, 13,416.44 and 8,857.76 is: 13,204.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,999.91 : 13,416.44 = 8,857.76 : x
  2. Step 2: Convert to fraction form
    8,999.91/13,416.44 = 8,857.76/x
  3. Step 3: Cross multiply
    8,999.91x = 13,416.44 × 8,857.76
  4. Step 4: Simplify right side
    8,999.91x = 118,839,494.20
  5. Step 5: Solve for x
    x = 118,839,494.20/8,999.91
  6. Step 6: Final answer
    x = 13,204.52

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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.