Home / 20,742.70-31,077.60-17,024.80

Finding the Fourth Proportional to 20,742.70, 31,077.60 and 17,024.80

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Solution

The fourth proportional to 20,742.70, 31,077.60 and 17,024.80 is: 25,507.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,742.70 : 31,077.60 = 17,024.80 : x
  2. Step 2: Convert to fraction form
    20,742.70/31,077.60 = 17,024.80/x
  3. Step 3: Cross multiply
    20,742.70x = 31,077.60 × 17,024.80
  4. Step 4: Simplify right side
    20,742.70x = 529,089,924.48
  5. Step 5: Solve for x
    x = 529,089,924.48/20,742.70
  6. Step 6: Final answer
    x = 25,507.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.