Home / 14,780.16-20,396.21-8,065.78

Finding the Fourth Proportional to 14,780.16, 20,396.21 and 8,065.78

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Solution

The fourth proportional to 14,780.16, 20,396.21 and 8,065.78 is: 11,130.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,780.16 : 20,396.21 = 8,065.78 : x
  2. Step 2: Convert to fraction form
    14,780.16/20,396.21 = 8,065.78/x
  3. Step 3: Cross multiply
    14,780.16x = 20,396.21 × 8,065.78
  4. Step 4: Simplify right side
    14,780.16x = 164,511,251.37
  5. Step 5: Solve for x
    x = 164,511,251.37/14,780.16
  6. Step 6: Final answer
    x = 11,130.55

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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.