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Finding the Fourth Proportional to 14,783.02, 20,400.06 and 8,811.61

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Solution

The fourth proportional to 14,783.02, 20,400.06 and 8,811.61 is: 12,159.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,783.02 : 20,400.06 = 8,811.61 : x
  2. Step 2: Convert to fraction form
    14,783.02/20,400.06 = 8,811.61/x
  3. Step 3: Cross multiply
    14,783.02x = 20,400.06 × 8,811.61
  4. Step 4: Simplify right side
    14,783.02x = 179,757,372.70
  5. Step 5: Solve for x
    x = 179,757,372.70/14,783.02
  6. Step 6: Final answer
    x = 12,159.72

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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.