Home / 20,131.36-30,182.45-10,142.26

Finding the Fourth Proportional to 20,131.36, 30,182.45 and 10,142.26

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Solution

The fourth proportional to 20,131.36, 30,182.45 and 10,142.26 is: 15,206.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,131.36 : 30,182.45 = 10,142.26 : x
  2. Step 2: Convert to fraction form
    20,131.36/30,182.45 = 10,142.26/x
  3. Step 3: Cross multiply
    20,131.36x = 30,182.45 × 10,142.26
  4. Step 4: Simplify right side
    20,131.36x = 306,118,255.34
  5. Step 5: Solve for x
    x = 306,118,255.34/20,131.36
  6. Step 6: Final answer
    x = 15,206.04

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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.