Home / 20,628.12-28,467.14-11,196.68

Finding the Fourth Proportional to 20,628.12, 28,467.14 and 11,196.68

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Solution

The fourth proportional to 20,628.12, 28,467.14 and 11,196.68 is: 15,451.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,628.12 : 28,467.14 = 11,196.68 : x
  2. Step 2: Convert to fraction form
    20,628.12/28,467.14 = 11,196.68/x
  3. Step 3: Cross multiply
    20,628.12x = 28,467.14 × 11,196.68
  4. Step 4: Simplify right side
    20,628.12x = 318,737,457.10
  5. Step 5: Solve for x
    x = 318,737,457.10/20,628.12
  6. Step 6: Final answer
    x = 15,451.60

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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.