Home / 20,743.86-31,119.21-7,614.66

Finding the Fourth Proportional to 20,743.86, 31,119.21 and 7,614.66

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Solution

The fourth proportional to 20,743.86, 31,119.21 and 7,614.66 is: 11,423.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.86 : 31,119.21 = 7,614.66 : x
  2. Step 2: Convert to fraction form
    20,743.86/31,119.21 = 7,614.66/x
  3. Step 3: Cross multiply
    20,743.86x = 31,119.21 × 7,614.66
  4. Step 4: Simplify right side
    20,743.86x = 236,962,203.62
  5. Step 5: Solve for x
    x = 236,962,203.62/20,743.86
  6. Step 6: Final answer
    x = 11,423.25

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1.5x scale

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.