Home / 20,144.22-27,790.08-13,423.30

Finding the Fourth Proportional to 20,144.22, 27,790.08 and 13,423.30

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Solution

The fourth proportional to 20,144.22, 27,790.08 and 13,423.30 is: 18,518.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.22 : 27,790.08 = 13,423.30 : x
  2. Step 2: Convert to fraction form
    20,144.22/27,790.08 = 13,423.30/x
  3. Step 3: Cross multiply
    20,144.22x = 27,790.08 × 13,423.30
  4. Step 4: Simplify right side
    20,144.22x = 373,034,461.05
  5. Step 5: Solve for x
    x = 373,034,461.05/20,144.22
  6. Step 6: Final answer
    x = 18,518.19

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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.