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Finding the Fourth Proportional to 14,768.51, 20,380.05 and 8,797.10

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Solution

The fourth proportional to 14,768.51, 20,380.05 and 8,797.10 is: 12,139.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,768.51 : 20,380.05 = 8,797.10 : x
  2. Step 2: Convert to fraction form
    14,768.51/20,380.05 = 8,797.10/x
  3. Step 3: Cross multiply
    14,768.51x = 20,380.05 × 8,797.10
  4. Step 4: Simplify right side
    14,768.51x = 179,285,235.95
  5. Step 5: Solve for x
    x = 179,285,235.95/14,768.51
  6. Step 6: Final answer
    x = 12,139.70

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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.