Home / 20,622.76-28,459.15-11,191.26

Finding the Fourth Proportional to 20,622.76, 28,459.15 and 11,191.26

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Solution

The fourth proportional to 20,622.76, 28,459.15 and 11,191.26 is: 15,443.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,622.76 : 28,459.15 = 11,191.26 : x
  2. Step 2: Convert to fraction form
    20,622.76/28,459.15 = 11,191.26/x
  3. Step 3: Cross multiply
    20,622.76x = 28,459.15 × 11,191.26
  4. Step 4: Simplify right side
    20,622.76x = 318,493,747.03
  5. Step 5: Solve for x
    x = 318,493,747.03/20,622.76
  6. Step 6: Final answer
    x = 15,443.80

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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.