Home / 18,686.09-25,782.26-11,127.57

Finding the Fourth Proportional to 18,686.09, 25,782.26 and 11,127.57

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Solution

The fourth proportional to 18,686.09, 25,782.26 and 11,127.57 is: 15,353.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,686.09 : 25,782.26 = 11,127.57 : x
  2. Step 2: Convert to fraction form
    18,686.09/25,782.26 = 11,127.57/x
  3. Step 3: Cross multiply
    18,686.09x = 25,782.26 × 11,127.57
  4. Step 4: Simplify right side
    18,686.09x = 286,893,847.27
  5. Step 5: Solve for x
    x = 286,893,847.27/18,686.09
  6. Step 6: Final answer
    x = 15,353.34

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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.