Home / 20,673.06-28,529.10-11,241.60

Finding the Fourth Proportional to 20,673.06, 28,529.10 and 11,241.60

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Solution

The fourth proportional to 20,673.06, 28,529.10 and 11,241.60 is: 15,513.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.06 : 28,529.10 = 11,241.60 : x
  2. Step 2: Convert to fraction form
    20,673.06/28,529.10 = 11,241.60/x
  3. Step 3: Cross multiply
    20,673.06x = 28,529.10 × 11,241.60
  4. Step 4: Simplify right side
    20,673.06x = 320,712,730.56
  5. Step 5: Solve for x
    x = 320,712,730.56/20,673.06
  6. Step 6: Final answer
    x = 15,513.56

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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.