Home / 20,260.46-30,399.78-12,862.94

Finding the Fourth Proportional to 20,260.46, 30,399.78 and 12,862.94

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Solution

The fourth proportional to 20,260.46, 30,399.78 and 12,862.94 is: 19,300.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,260.46 : 30,399.78 = 12,862.94 : x
  2. Step 2: Convert to fraction form
    20,260.46/30,399.78 = 12,862.94/x
  3. Step 3: Cross multiply
    20,260.46x = 30,399.78 × 12,862.94
  4. Step 4: Simplify right side
    20,260.46x = 391,030,546.15
  5. Step 5: Solve for x
    x = 391,030,546.15/20,260.46
  6. Step 6: Final answer
    x = 19,300.18

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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.