Home / 20,709.41-28,577.63-12,211.12

Finding the Fourth Proportional to 20,709.41, 28,577.63 and 12,211.12

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Solution

The fourth proportional to 20,709.41, 28,577.63 and 12,211.12 is: 16,850.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,709.41 : 28,577.63 = 12,211.12 : x
  2. Step 2: Convert to fraction form
    20,709.41/28,577.63 = 12,211.12/x
  3. Step 3: Cross multiply
    20,709.41x = 28,577.63 × 12,211.12
  4. Step 4: Simplify right side
    20,709.41x = 348,964,823.79
  5. Step 5: Solve for x
    x = 348,964,823.79/20,709.41
  6. Step 6: Final answer
    x = 16,850.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.