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Finding the Fourth Proportional to 14,765.58, 20,381.44 and 8,799.12

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Solution

The fourth proportional to 14,765.58, 20,381.44 and 8,799.12 is: 12,145.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,765.58 : 20,381.44 = 8,799.12 : x
  2. Step 2: Convert to fraction form
    14,765.58/20,381.44 = 8,799.12/x
  3. Step 3: Cross multiply
    14,765.58x = 20,381.44 × 8,799.12
  4. Step 4: Simplify right side
    14,765.58x = 179,338,809.28
  5. Step 5: Solve for x
    x = 179,338,809.28/14,765.58
  6. Step 6: Final answer
    x = 12,145.73

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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.