Home / 21,812.91-30,103.08-16,425.70

Finding the Fourth Proportional to 21,812.91, 30,103.08 and 16,425.70

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Solution

The fourth proportional to 21,812.91, 30,103.08 and 16,425.70 is: 22,668.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,812.91 : 30,103.08 = 16,425.70 : x
  2. Step 2: Convert to fraction form
    21,812.91/30,103.08 = 16,425.70/x
  3. Step 3: Cross multiply
    21,812.91x = 30,103.08 × 16,425.70
  4. Step 4: Simplify right side
    21,812.91x = 494,464,024.30
  5. Step 5: Solve for x
    x = 494,464,024.30/21,812.91
  6. Step 6: Final answer
    x = 22,668.42

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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.