Home / 20,829.06-31,212.27-8,336.70

Finding the Fourth Proportional to 20,829.06, 31,212.27 and 8,336.70

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Solution

The fourth proportional to 20,829.06, 31,212.27 and 8,336.70 is: 12,492.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,829.06 : 31,212.27 = 8,336.70 : x
  2. Step 2: Convert to fraction form
    20,829.06/31,212.27 = 8,336.70/x
  3. Step 3: Cross multiply
    20,829.06x = 31,212.27 × 8,336.70
  4. Step 4: Simplify right side
    20,829.06x = 260,207,331.31
  5. Step 5: Solve for x
    x = 260,207,331.31/20,829.06
  6. Step 6: Final answer
    x = 12,492.51

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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.