Home / 20,622.73-28,459.70-11,191.29

Finding the Fourth Proportional to 20,622.73, 28,459.70 and 11,191.29

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Solution

The fourth proportional to 20,622.73, 28,459.70 and 11,191.29 is: 15,444.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,622.73 : 28,459.70 = 11,191.29 : x
  2. Step 2: Convert to fraction form
    20,622.73/28,459.70 = 11,191.29/x
  3. Step 3: Cross multiply
    20,622.73x = 28,459.70 × 11,191.29
  4. Step 4: Simplify right side
    20,622.73x = 318,500,778.29
  5. Step 5: Solve for x
    x = 318,500,778.29/20,622.73
  6. Step 6: Final answer
    x = 15,444.16

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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.