Home / 20,178.09-30,253.44-10,309.23

Finding the Fourth Proportional to 20,178.09, 30,253.44 and 10,309.23

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Solution

The fourth proportional to 20,178.09, 30,253.44 and 10,309.23 is: 15,456.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,178.09 : 30,253.44 = 10,309.23 : x
  2. Step 2: Convert to fraction form
    20,178.09/30,253.44 = 10,309.23/x
  3. Step 3: Cross multiply
    20,178.09x = 30,253.44 × 10,309.23
  4. Step 4: Simplify right side
    20,178.09x = 311,889,671.25
  5. Step 5: Solve for x
    x = 311,889,671.25/20,178.09
  6. Step 6: Final answer
    x = 15,456.85

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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.