Home / 20,191.23-30,259.08-10,309.68

Finding the Fourth Proportional to 20,191.23, 30,259.08 and 10,309.68

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Solution

The fourth proportional to 20,191.23, 30,259.08 and 10,309.68 is: 15,450.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,191.23 : 30,259.08 = 10,309.68 : x
  2. Step 2: Convert to fraction form
    20,191.23/30,259.08 = 10,309.68/x
  3. Step 3: Cross multiply
    20,191.23x = 30,259.08 × 10,309.68
  4. Step 4: Simplify right side
    20,191.23x = 311,961,431.89
  5. Step 5: Solve for x
    x = 311,961,431.89/20,191.23
  6. Step 6: Final answer
    x = 15,450.34

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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.