Home / 19,520.54-26,919.90-12,811.98

Finding the Fourth Proportional to 19,520.54, 26,919.90 and 12,811.98

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Solution

The fourth proportional to 19,520.54, 26,919.90 and 12,811.98 is: 17,668.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,520.54 : 26,919.90 = 12,811.98 : x
  2. Step 2: Convert to fraction form
    19,520.54/26,919.90 = 12,811.98/x
  3. Step 3: Cross multiply
    19,520.54x = 26,919.90 × 12,811.98
  4. Step 4: Simplify right side
    19,520.54x = 344,897,220.40
  5. Step 5: Solve for x
    x = 344,897,220.40/19,520.54
  6. Step 6: Final answer
    x = 17,668.43

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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.