Home / 20,824.94-28,731.92-12,328.04

Finding the Fourth Proportional to 20,824.94, 28,731.92 and 12,328.04

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Solution

The fourth proportional to 20,824.94, 28,731.92 and 12,328.04 is: 17,008.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,824.94 : 28,731.92 = 12,328.04 : x
  2. Step 2: Convert to fraction form
    20,824.94/28,731.92 = 12,328.04/x
  3. Step 3: Cross multiply
    20,824.94x = 28,731.92 × 12,328.04
  4. Step 4: Simplify right side
    20,824.94x = 354,208,259.04
  5. Step 5: Solve for x
    x = 354,208,259.04/20,824.94
  6. Step 6: Final answer
    x = 17,008.85

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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.