Home / 20,853.95-31,281.85-6,814.83

Finding the Fourth Proportional to 20,853.95, 31,281.85 and 6,814.83

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Solution

The fourth proportional to 20,853.95, 31,281.85 and 6,814.83 is: 10,222.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,853.95 : 31,281.85 = 6,814.83 : x
  2. Step 2: Convert to fraction form
    20,853.95/31,281.85 = 6,814.83/x
  3. Step 3: Cross multiply
    20,853.95x = 31,281.85 × 6,814.83
  4. Step 4: Simplify right side
    20,853.95x = 213,180,489.84
  5. Step 5: Solve for x
    x = 213,180,489.84/20,853.95
  6. Step 6: Final answer
    x = 10,222.55

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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.