Home / 13,086.09-19,583.78-12,541.77

Finding the Fourth Proportional to 13,086.09, 19,583.78 and 12,541.77

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Solution

The fourth proportional to 13,086.09, 19,583.78 and 12,541.77 is: 18,769.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,086.09 : 19,583.78 = 12,541.77 : x
  2. Step 2: Convert to fraction form
    13,086.09/19,583.78 = 12,541.77/x
  3. Step 3: Cross multiply
    13,086.09x = 19,583.78 × 12,541.77
  4. Step 4: Simplify right side
    13,086.09x = 245,615,297.77
  5. Step 5: Solve for x
    x = 245,615,297.77/13,086.09
  6. Step 6: Final answer
    x = 18,769.19

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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.