Home / 14,778.14-20,388.51-11,376.20

Finding the Fourth Proportional to 14,778.14, 20,388.51 and 11,376.20

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Solution

The fourth proportional to 14,778.14, 20,388.51 and 11,376.20 is: 15,695.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,778.14 : 20,388.51 = 11,376.20 : x
  2. Step 2: Convert to fraction form
    14,778.14/20,388.51 = 11,376.20/x
  3. Step 3: Cross multiply
    14,778.14x = 20,388.51 × 11,376.20
  4. Step 4: Simplify right side
    14,778.14x = 231,943,660.85
  5. Step 5: Solve for x
    x = 231,943,660.85/14,778.14
  6. Step 6: Final answer
    x = 15,695.05

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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.