Home / 20,415.60-28,173.54-11,463.96

Finding the Fourth Proportional to 20,415.60, 28,173.54 and 11,463.96

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Solution

The fourth proportional to 20,415.60, 28,173.54 and 11,463.96 is: 15,820.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,415.60 : 28,173.54 = 11,463.96 : x
  2. Step 2: Convert to fraction form
    20,415.60/28,173.54 = 11,463.96/x
  3. Step 3: Cross multiply
    20,415.60x = 28,173.54 × 11,463.96
  4. Step 4: Simplify right side
    20,415.60x = 322,980,335.62
  5. Step 5: Solve for x
    x = 322,980,335.62/20,415.60
  6. Step 6: Final answer
    x = 15,820.27

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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.