Home / 20,740.43-28,623.49-11,790.74

Finding the Fourth Proportional to 20,740.43, 28,623.49 and 11,790.74

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Solution

The fourth proportional to 20,740.43, 28,623.49 and 11,790.74 is: 16,272.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,740.43 : 28,623.49 = 11,790.74 : x
  2. Step 2: Convert to fraction form
    20,740.43/28,623.49 = 11,790.74/x
  3. Step 3: Cross multiply
    20,740.43x = 28,623.49 × 11,790.74
  4. Step 4: Simplify right side
    20,740.43x = 337,491,955.89
  5. Step 5: Solve for x
    x = 337,491,955.89/20,740.43
  6. Step 6: Final answer
    x = 16,272.18

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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.