Home / 20,735.64-28,615.14-11,304.20

Finding the Fourth Proportional to 20,735.64, 28,615.14 and 11,304.20

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Solution

The fourth proportional to 20,735.64, 28,615.14 and 11,304.20 is: 15,599.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.64 : 28,615.14 = 11,304.20 : x
  2. Step 2: Convert to fraction form
    20,735.64/28,615.14 = 11,304.20/x
  3. Step 3: Cross multiply
    20,735.64x = 28,615.14 × 11,304.20
  4. Step 4: Simplify right side
    20,735.64x = 323,471,265.59
  5. Step 5: Solve for x
    x = 323,471,265.59/20,735.64
  6. Step 6: Final answer
    x = 15,599.77

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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.