Home / 20,571.85-30,853.83-10,031.28

Finding the Fourth Proportional to 20,571.85, 30,853.83 and 10,031.28

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Solution

The fourth proportional to 20,571.85, 30,853.83 and 10,031.28 is: 15,045.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,571.85 : 30,853.83 = 10,031.28 : x
  2. Step 2: Convert to fraction form
    20,571.85/30,853.83 = 10,031.28/x
  3. Step 3: Cross multiply
    20,571.85x = 30,853.83 × 10,031.28
  4. Step 4: Simplify right side
    20,571.85x = 309,503,407.80
  5. Step 5: Solve for x
    x = 309,503,407.80/20,571.85
  6. Step 6: Final answer
    x = 15,045.00

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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.