Home / 20,790.66-28,680.83-14,742.18

Finding the Fourth Proportional to 20,790.66, 28,680.83 and 14,742.18

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Solution

The fourth proportional to 20,790.66, 28,680.83 and 14,742.18 is: 20,336.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,790.66 : 28,680.83 = 14,742.18 : x
  2. Step 2: Convert to fraction form
    20,790.66/28,680.83 = 14,742.18/x
  3. Step 3: Cross multiply
    20,790.66x = 28,680.83 × 14,742.18
  4. Step 4: Simplify right side
    20,790.66x = 422,817,884.70
  5. Step 5: Solve for x
    x = 422,817,884.70/20,790.66
  6. Step 6: Final answer
    x = 20,336.91

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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.