Home / 13,566.70-18,711.75-11,885.19

Finding the Fourth Proportional to 13,566.70, 18,711.75 and 11,885.19

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Solution

The fourth proportional to 13,566.70, 18,711.75 and 11,885.19 is: 16,392.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,566.70 : 18,711.75 = 11,885.19 : x
  2. Step 2: Convert to fraction form
    13,566.70/18,711.75 = 11,885.19/x
  3. Step 3: Cross multiply
    13,566.70x = 18,711.75 × 11,885.19
  4. Step 4: Simplify right side
    13,566.70x = 222,392,645.58
  5. Step 5: Solve for x
    x = 222,392,645.58/13,566.70
  6. Step 6: Final answer
    x = 16,392.54

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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.