Home / 20,830.85-31,246.12-8,350.70

Finding the Fourth Proportional to 20,830.85, 31,246.12 and 8,350.70

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Solution

The fourth proportional to 20,830.85, 31,246.12 and 8,350.70 is: 12,525.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830.85 : 31,246.12 = 8,350.70 : x
  2. Step 2: Convert to fraction form
    20,830.85/31,246.12 = 8,350.70/x
  3. Step 3: Cross multiply
    20,830.85x = 31,246.12 × 8,350.70
  4. Step 4: Simplify right side
    20,830.85x = 260,926,797.18
  5. Step 5: Solve for x
    x = 260,926,797.18/20,830.85
  6. Step 6: Final answer
    x = 12,525.98

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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.