Home / 20,754.76-31,136.14-6,718.27

Finding the Fourth Proportional to 20,754.76, 31,136.14 and 6,718.27

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Solution

The fourth proportional to 20,754.76, 31,136.14 and 6,718.27 is: 10,078.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,754.76 : 31,136.14 = 6,718.27 : x
  2. Step 2: Convert to fraction form
    20,754.76/31,136.14 = 6,718.27/x
  3. Step 3: Cross multiply
    20,754.76x = 31,136.14 × 6,718.27
  4. Step 4: Simplify right side
    20,754.76x = 209,180,995.28
  5. Step 5: Solve for x
    x = 209,180,995.28/20,754.76
  6. Step 6: Final answer
    x = 10,078.70

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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.