Home / 14,651.72-21,923.12-8,731.78

Finding the Fourth Proportional to 14,651.72, 21,923.12 and 8,731.78

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Solution

The fourth proportional to 14,651.72, 21,923.12 and 8,731.78 is: 13,065.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,651.72 : 21,923.12 = 8,731.78 : x
  2. Step 2: Convert to fraction form
    14,651.72/21,923.12 = 8,731.78/x
  3. Step 3: Cross multiply
    14,651.72x = 21,923.12 × 8,731.78
  4. Step 4: Simplify right side
    14,651.72x = 191,427,860.75
  5. Step 5: Solve for x
    x = 191,427,860.75/14,651.72
  6. Step 6: Final answer
    x = 13,065.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.