Home / 20,853.16-31,282.32-6,814.60

Finding the Fourth Proportional to 20,853.16, 31,282.32 and 6,814.60

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Solution

The fourth proportional to 20,853.16, 31,282.32 and 6,814.60 is: 10,222.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,853.16 : 31,282.32 = 6,814.60 : x
  2. Step 2: Convert to fraction form
    20,853.16/31,282.32 = 6,814.60/x
  3. Step 3: Cross multiply
    20,853.16x = 31,282.32 × 6,814.60
  4. Step 4: Simplify right side
    20,853.16x = 213,176,497.87
  5. Step 5: Solve for x
    x = 213,176,497.87/20,853.16
  6. Step 6: Final answer
    x = 10,222.74

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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.