Home / 13,710.20-20,570.79-5,392.31

Finding the Fourth Proportional to 13,710.20, 20,570.79 and 5,392.31

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Solution

The fourth proportional to 13,710.20, 20,570.79 and 5,392.31 is: 8,090.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,710.20 : 20,570.79 = 5,392.31 : x
  2. Step 2: Convert to fraction form
    13,710.20/20,570.79 = 5,392.31/x
  3. Step 3: Cross multiply
    13,710.20x = 20,570.79 × 5,392.31
  4. Step 4: Simplify right side
    13,710.20x = 110,924,076.62
  5. Step 5: Solve for x
    x = 110,924,076.62/13,710.20
  6. Step 6: Final answer
    x = 8,090.62

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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.