Home / 13,725.91-20,572.80-12,168.89

Finding the Fourth Proportional to 13,725.91, 20,572.80 and 12,168.89

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Solution

The fourth proportional to 13,725.91, 20,572.80 and 12,168.89 is: 18,239.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,725.91 : 20,572.80 = 12,168.89 : x
  2. Step 2: Convert to fraction form
    13,725.91/20,572.80 = 12,168.89/x
  3. Step 3: Cross multiply
    13,725.91x = 20,572.80 × 12,168.89
  4. Step 4: Simplify right side
    13,725.91x = 250,348,140.19
  5. Step 5: Solve for x
    x = 250,348,140.19/13,725.91
  6. Step 6: Final answer
    x = 18,239.09

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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.