Home / 14,780.12-20,396.96-8,065.88

Finding the Fourth Proportional to 14,780.12, 20,396.96 and 8,065.88

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Solution

The fourth proportional to 14,780.12, 20,396.96 and 8,065.88 is: 11,131.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,780.12 : 20,396.96 = 8,065.88 : x
  2. Step 2: Convert to fraction form
    14,780.12/20,396.96 = 8,065.88/x
  3. Step 3: Cross multiply
    14,780.12x = 20,396.96 × 8,065.88
  4. Step 4: Simplify right side
    14,780.12x = 164,519,431.72
  5. Step 5: Solve for x
    x = 164,519,431.72/14,780.12
  6. Step 6: Final answer
    x = 11,131.13

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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.