Home / 19,520.28-26,930.72-12,809.62

Finding the Fourth Proportional to 19,520.28, 26,930.72 and 12,809.62

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Solution

The fourth proportional to 19,520.28, 26,930.72 and 12,809.62 is: 17,672.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,520.28 : 26,930.72 = 12,809.62 : x
  2. Step 2: Convert to fraction form
    19,520.28/26,930.72 = 12,809.62/x
  3. Step 3: Cross multiply
    19,520.28x = 26,930.72 × 12,809.62
  4. Step 4: Simplify right side
    19,520.28x = 344,972,289.53
  5. Step 5: Solve for x
    x = 344,972,289.53/19,520.28
  6. Step 6: Final answer
    x = 17,672.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.