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Finding the Fourth Proportional to 14,847.86, 20,489.10 and 8,879.64

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Solution

The fourth proportional to 14,847.86, 20,489.10 and 8,879.64 is: 12,253.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,847.86 : 20,489.10 = 8,879.64 : x
  2. Step 2: Convert to fraction form
    14,847.86/20,489.10 = 8,879.64/x
  3. Step 3: Cross multiply
    14,847.86x = 20,489.10 × 8,879.64
  4. Step 4: Simplify right side
    14,847.86x = 181,935,831.92
  5. Step 5: Solve for x
    x = 181,935,831.92/14,847.86
  6. Step 6: Final answer
    x = 12,253.34

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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.