Home / 18,420.26-27,608.75-8,538.74

Finding the Fourth Proportional to 18,420.26, 27,608.75 and 8,538.74

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Solution

The fourth proportional to 18,420.26, 27,608.75 and 8,538.74 is: 12,798.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,420.26 : 27,608.75 = 8,538.74 : x
  2. Step 2: Convert to fraction form
    18,420.26/27,608.75 = 8,538.74/x
  3. Step 3: Cross multiply
    18,420.26x = 27,608.75 × 8,538.74
  4. Step 4: Simplify right side
    18,420.26x = 235,743,826.26
  5. Step 5: Solve for x
    x = 235,743,826.26/18,420.26
  6. Step 6: Final answer
    x = 12,798.07

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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.