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Finding the Fourth Proportional to 14,965.05, 20,659.14 and 9,662.79

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Solution

The fourth proportional to 14,965.05, 20,659.14 and 9,662.79 is: 13,339.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,965.05 : 20,659.14 = 9,662.79 : x
  2. Step 2: Convert to fraction form
    14,965.05/20,659.14 = 9,662.79/x
  3. Step 3: Cross multiply
    14,965.05x = 20,659.14 × 9,662.79
  4. Step 4: Simplify right side
    14,965.05x = 199,624,931.40
  5. Step 5: Solve for x
    x = 199,624,931.40/14,965.05
  6. Step 6: Final answer
    x = 13,339.41

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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.