Home / 20,562.96-28,371.78-12,065.88

Finding the Fourth Proportional to 20,562.96, 28,371.78 and 12,065.88

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Solution

The fourth proportional to 20,562.96, 28,371.78 and 12,065.88 is: 16,647.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,562.96 : 28,371.78 = 12,065.88 : x
  2. Step 2: Convert to fraction form
    20,562.96/28,371.78 = 12,065.88/x
  3. Step 3: Cross multiply
    20,562.96x = 28,371.78 × 12,065.88
  4. Step 4: Simplify right side
    20,562.96x = 342,330,492.87
  5. Step 5: Solve for x
    x = 342,330,492.87/20,562.96
  6. Step 6: Final answer
    x = 16,647.92

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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.