Home / 20,431.08-30,652.11-7,287.21

Finding the Fourth Proportional to 20,431.08, 30,652.11 and 7,287.21

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Solution

The fourth proportional to 20,431.08, 30,652.11 and 7,287.21 is: 10,932.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431.08 : 30,652.11 = 7,287.21 : x
  2. Step 2: Convert to fraction form
    20,431.08/30,652.11 = 7,287.21/x
  3. Step 3: Cross multiply
    20,431.08x = 30,652.11 × 7,287.21
  4. Step 4: Simplify right side
    20,431.08x = 223,368,362.51
  5. Step 5: Solve for x
    x = 223,368,362.51/20,431.08
  6. Step 6: Final answer
    x = 10,932.77

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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.