Home / 20,735.67-28,615.14-11,304.21

Finding the Fourth Proportional to 20,735.67, 28,615.14 and 11,304.21

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Solution

The fourth proportional to 20,735.67, 28,615.14 and 11,304.21 is: 15,599.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.67 : 28,615.14 = 11,304.21 : x
  2. Step 2: Convert to fraction form
    20,735.67/28,615.14 = 11,304.21/x
  3. Step 3: Cross multiply
    20,735.67x = 28,615.14 × 11,304.21
  4. Step 4: Simplify right side
    20,735.67x = 323,471,551.74
  5. Step 5: Solve for x
    x = 323,471,551.74/20,735.67
  6. Step 6: Final answer
    x = 15,599.76

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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.