Home / 18,420.22-27,610.66-10,505.69

Finding the Fourth Proportional to 18,420.22, 27,610.66 and 10,505.69

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Solution

The fourth proportional to 18,420.22, 27,610.66 and 10,505.69 is: 15,747.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.22 : 27,610.66 = 10,505.69 : x
  2. Step 2: Convert to fraction form
    18,420.22/27,610.66 = 10,505.69/x
  3. Step 3: Cross multiply
    18,420.22x = 27,610.66 × 10,505.69
  4. Step 4: Simplify right side
    18,420.22x = 290,069,129.19
  5. Step 5: Solve for x
    x = 290,069,129.19/18,420.22
  6. Step 6: Final answer
    x = 15,747.32

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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.