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Finding the Fourth Proportional to 11,970.17, 16,518.48 and 6,664.87

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Solution

The fourth proportional to 11,970.17, 16,518.48 and 6,664.87 is: 9,197.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,970.17 : 16,518.48 = 6,664.87 : x
  2. Step 2: Convert to fraction form
    11,970.17/16,518.48 = 6,664.87/x
  3. Step 3: Cross multiply
    11,970.17x = 16,518.48 × 6,664.87
  4. Step 4: Simplify right side
    11,970.17x = 110,093,439.21
  5. Step 5: Solve for x
    x = 110,093,439.21/11,970.17
  6. Step 6: Final answer
    x = 9,197.32

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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.