Home / 20,937.47-31,401.34-6,142.41

Finding the Fourth Proportional to 20,937.47, 31,401.34 and 6,142.41

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Solution

The fourth proportional to 20,937.47, 31,401.34 and 6,142.41 is: 9,212.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,937.47 : 31,401.34 = 6,142.41 : x
  2. Step 2: Convert to fraction form
    20,937.47/31,401.34 = 6,142.41/x
  3. Step 3: Cross multiply
    20,937.47x = 31,401.34 × 6,142.41
  4. Step 4: Simplify right side
    20,937.47x = 192,879,889.47
  5. Step 5: Solve for x
    x = 192,879,889.47/20,937.47
  6. Step 6: Final answer
    x = 9,212.19

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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.