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Finding the Fourth Proportional to 14,765.64, 20,378.92 and 8,800.77

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Solution

The fourth proportional to 14,765.64, 20,378.92 and 8,800.77 is: 12,146.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,765.64 : 20,378.92 = 8,800.77 : x
  2. Step 2: Convert to fraction form
    14,765.64/20,378.92 = 8,800.77/x
  3. Step 3: Cross multiply
    14,765.64x = 20,378.92 × 8,800.77
  4. Step 4: Simplify right side
    14,765.64x = 179,350,187.77
  5. Step 5: Solve for x
    x = 179,350,187.77/14,765.64
  6. Step 6: Final answer
    x = 12,146.46

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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.