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Finding the Fourth Proportional to 11,964.04, 16,509.78 and 6,659.32

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Solution

The fourth proportional to 11,964.04, 16,509.78 and 6,659.32 is: 9,189.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,964.04 : 16,509.78 = 6,659.32 : x
  2. Step 2: Convert to fraction form
    11,964.04/16,509.78 = 6,659.32/x
  3. Step 3: Cross multiply
    11,964.04x = 16,509.78 × 6,659.32
  4. Step 4: Simplify right side
    11,964.04x = 109,943,908.15
  5. Step 5: Solve for x
    x = 109,943,908.15/11,964.04
  6. Step 6: Final answer
    x = 9,189.53

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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.