Home / 20,622.31-28,458.70-11,669.83

Finding the Fourth Proportional to 20,622.31, 28,458.70 and 11,669.83

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Solution

The fourth proportional to 20,622.31, 28,458.70 and 11,669.83 is: 16,104.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,622.31 : 28,458.70 = 11,669.83 : x
  2. Step 2: Convert to fraction form
    20,622.31/28,458.70 = 11,669.83/x
  3. Step 3: Cross multiply
    20,622.31x = 28,458.70 × 11,669.83
  4. Step 4: Simplify right side
    20,622.31x = 332,108,191.02
  5. Step 5: Solve for x
    x = 332,108,191.02/20,622.31
  6. Step 6: Final answer
    x = 16,104.32

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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.