Home / 20,735.19-28,615.34-11,784.21

Finding the Fourth Proportional to 20,735.19, 28,615.34 and 11,784.21

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Solution

The fourth proportional to 20,735.19, 28,615.34 and 11,784.21 is: 16,262.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.19 : 28,615.34 = 11,784.21 : x
  2. Step 2: Convert to fraction form
    20,735.19/28,615.34 = 11,784.21/x
  3. Step 3: Cross multiply
    20,735.19x = 28,615.34 × 11,784.21
  4. Step 4: Simplify right side
    20,735.19x = 337,209,175.78
  5. Step 5: Solve for x
    x = 337,209,175.78/20,735.19
  6. Step 6: Final answer
    x = 16,262.65

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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.