Home / 20,827.80-28,737.79-12,325.68

Finding the Fourth Proportional to 20,827.80, 28,737.79 and 12,325.68

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Solution

The fourth proportional to 20,827.80, 28,737.79 and 12,325.68 is: 17,006.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.80 : 28,737.79 = 12,325.68 : x
  2. Step 2: Convert to fraction form
    20,827.80/28,737.79 = 12,325.68/x
  3. Step 3: Cross multiply
    20,827.80x = 28,737.79 × 12,325.68
  4. Step 4: Simplify right side
    20,827.80x = 354,212,813.05
  5. Step 5: Solve for x
    x = 354,212,813.05/20,827.80
  6. Step 6: Final answer
    x = 17,006.74

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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.