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Finding the Fourth Proportional to 13,664.04, 18,866.48 and 8,366.08

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Solution

The fourth proportional to 13,664.04, 18,866.48 and 8,366.08 is: 11,551.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,664.04 : 18,866.48 = 8,366.08 : x
  2. Step 2: Convert to fraction form
    13,664.04/18,866.48 = 8,366.08/x
  3. Step 3: Cross multiply
    13,664.04x = 18,866.48 × 8,366.08
  4. Step 4: Simplify right side
    13,664.04x = 157,838,481.00
  5. Step 5: Solve for x
    x = 157,838,481.00/13,664.04
  6. Step 6: Final answer
    x = 11,551.38

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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.