Home / 18,580.56-25,655.21-11,420.36

Finding the Fourth Proportional to 18,580.56, 25,655.21 and 11,420.36

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Solution

The fourth proportional to 18,580.56, 25,655.21 and 11,420.36 is: 15,768.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,580.56 : 25,655.21 = 11,420.36 : x
  2. Step 2: Convert to fraction form
    18,580.56/25,655.21 = 11,420.36/x
  3. Step 3: Cross multiply
    18,580.56x = 25,655.21 × 11,420.36
  4. Step 4: Simplify right side
    18,580.56x = 292,991,751.97
  5. Step 5: Solve for x
    x = 292,991,751.97/18,580.56
  6. Step 6: Final answer
    x = 15,768.73

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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.