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Finding the Fourth Proportional to 14,964.64, 20,642.64 and 9,365.92

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Solution

The fourth proportional to 14,964.64, 20,642.64 and 9,365.92 is: 12,919.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,964.64 : 20,642.64 = 9,365.92 : x
  2. Step 2: Convert to fraction form
    14,964.64/20,642.64 = 9,365.92/x
  3. Step 3: Cross multiply
    14,964.64x = 20,642.64 × 9,365.92
  4. Step 4: Simplify right side
    14,964.64x = 193,337,314.83
  5. Step 5: Solve for x
    x = 193,337,314.83/14,964.64
  6. Step 6: Final answer
    x = 12,919.61

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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.