Home / 20,378.24-30,555.84-12,059.36

Finding the Fourth Proportional to 20,378.24, 30,555.84 and 12,059.36

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Solution

The fourth proportional to 20,378.24, 30,555.84 and 12,059.36 is: 18,082.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,378.24 : 30,555.84 = 12,059.36 : x
  2. Step 2: Convert to fraction form
    20,378.24/30,555.84 = 12,059.36/x
  3. Step 3: Cross multiply
    20,378.24x = 30,555.84 × 12,059.36
  4. Step 4: Simplify right side
    20,378.24x = 368,483,874.66
  5. Step 5: Solve for x
    x = 368,483,874.66/20,378.24
  6. Step 6: Final answer
    x = 18,082.22

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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.