Home / 20,699.19-28,564.74-11,267.73

Finding the Fourth Proportional to 20,699.19, 28,564.74 and 11,267.73

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Solution

The fourth proportional to 20,699.19, 28,564.74 and 11,267.73 is: 15,549.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,699.19 : 28,564.74 = 11,267.73 : x
  2. Step 2: Convert to fraction form
    20,699.19/28,564.74 = 11,267.73/x
  3. Step 3: Cross multiply
    20,699.19x = 28,564.74 × 11,267.73
  4. Step 4: Simplify right side
    20,699.19x = 321,859,777.84
  5. Step 5: Solve for x
    x = 321,859,777.84/20,699.19
  6. Step 6: Final answer
    x = 15,549.39

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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.