Home / 20,144.13-30,216.60-9,615.39

Finding the Fourth Proportional to 20,144.13, 30,216.60 and 9,615.39

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Solution

The fourth proportional to 20,144.13, 30,216.60 and 9,615.39 is: 14,423.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.13 : 30,216.60 = 9,615.39 : x
  2. Step 2: Convert to fraction form
    20,144.13/30,216.60 = 9,615.39/x
  3. Step 3: Cross multiply
    20,144.13x = 30,216.60 × 9,615.39
  4. Step 4: Simplify right side
    20,144.13x = 290,544,393.47
  5. Step 5: Solve for x
    x = 290,544,393.47/20,144.13
  6. Step 6: Final answer
    x = 14,423.28

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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.