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Finding the Fourth Proportional to 14,522.79, 21,789.05 and 5,760.21

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Solution

The fourth proportional to 14,522.79, 21,789.05 and 5,760.21 is: 8,642.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,522.79 : 21,789.05 = 5,760.21 : x
  2. Step 2: Convert to fraction form
    14,522.79/21,789.05 = 5,760.21/x
  3. Step 3: Cross multiply
    14,522.79x = 21,789.05 × 5,760.21
  4. Step 4: Simplify right side
    14,522.79x = 125,509,474.90
  5. Step 5: Solve for x
    x = 125,509,474.90/14,522.79
  6. Step 6: Final answer
    x = 8,642.24

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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.