Home / 27,210.20-40,772.10-20,211.80

Finding the Fourth Proportional to 27,210.20, 40,772.10 and 20,211.80

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Solution

The fourth proportional to 27,210.20, 40,772.10 and 20,211.80 is: 30,285.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,210.20 : 40,772.10 = 20,211.80 : x
  2. Step 2: Convert to fraction form
    27,210.20/40,772.10 = 20,211.80/x
  3. Step 3: Cross multiply
    27,210.20x = 40,772.10 × 20,211.80
  4. Step 4: Simplify right side
    27,210.20x = 824,077,530.78
  5. Step 5: Solve for x
    x = 824,077,530.78/27,210.20
  6. Step 6: Final answer
    x = 30,285.61

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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.