Home / 20,646.72-28,491.84-12,263.04

Finding the Fourth Proportional to 20,646.72, 28,491.84 and 12,263.04

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Solution

The fourth proportional to 20,646.72, 28,491.84 and 12,263.04 is: 16,922.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,646.72 : 28,491.84 = 12,263.04 : x
  2. Step 2: Convert to fraction form
    20,646.72/28,491.84 = 12,263.04/x
  3. Step 3: Cross multiply
    20,646.72x = 28,491.84 × 12,263.04
  4. Step 4: Simplify right side
    20,646.72x = 349,396,573.59
  5. Step 5: Solve for x
    x = 349,396,573.59/20,646.72
  6. Step 6: Final answer
    x = 16,922.62

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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.