Home / 20,623.28-30,895.06-12,309.92

Finding the Fourth Proportional to 20,623.28, 30,895.06 and 12,309.92

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Solution

The fourth proportional to 20,623.28, 30,895.06 and 12,309.92 is: 18,441.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,623.28 : 30,895.06 = 12,309.92 : x
  2. Step 2: Convert to fraction form
    20,623.28/30,895.06 = 12,309.92/x
  3. Step 3: Cross multiply
    20,623.28x = 30,895.06 × 12,309.92
  4. Step 4: Simplify right side
    20,623.28x = 380,315,717.00
  5. Step 5: Solve for x
    x = 380,315,717.00/20,623.28
  6. Step 6: Final answer
    x = 18,441.09

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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.