Home / 20,710.85-31,049.27-8,225.51

Finding the Fourth Proportional to 20,710.85, 31,049.27 and 8,225.51

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Solution

The fourth proportional to 20,710.85, 31,049.27 and 8,225.51 is: 12,331.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,710.85 : 31,049.27 = 8,225.51 : x
  2. Step 2: Convert to fraction form
    20,710.85/31,049.27 = 8,225.51/x
  3. Step 3: Cross multiply
    20,710.85x = 31,049.27 × 8,225.51
  4. Step 4: Simplify right side
    20,710.85x = 255,396,039.75
  5. Step 5: Solve for x
    x = 255,396,039.75/20,710.85
  6. Step 6: Final answer
    x = 12,331.51

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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.