Home / 20,070.89-27,690.61-12,110.21

Finding the Fourth Proportional to 20,070.89, 27,690.61 and 12,110.21

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Solution

The fourth proportional to 20,070.89, 27,690.61 and 12,110.21 is: 16,707.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,070.89 : 27,690.61 = 12,110.21 : x
  2. Step 2: Convert to fraction form
    20,070.89/27,690.61 = 12,110.21/x
  3. Step 3: Cross multiply
    20,070.89x = 27,690.61 × 12,110.21
  4. Step 4: Simplify right side
    20,070.89x = 335,339,059.95
  5. Step 5: Solve for x
    x = 335,339,059.95/20,070.89
  6. Step 6: Final answer
    x = 16,707.73

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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.