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Finding the Fourth Proportional to 14,784.82, 20,403.07 and 9,479.64

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Solution

The fourth proportional to 14,784.82, 20,403.07 and 9,479.64 is: 13,081.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,784.82 : 20,403.07 = 9,479.64 : x
  2. Step 2: Convert to fraction form
    14,784.82/20,403.07 = 9,479.64/x
  3. Step 3: Cross multiply
    14,784.82x = 20,403.07 × 9,479.64
  4. Step 4: Simplify right side
    14,784.82x = 193,413,749.86
  5. Step 5: Solve for x
    x = 193,413,749.86/14,784.82
  6. Step 6: Final answer
    x = 13,081.91

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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.