Home / 18,810.69-28,228.26-8,147.46

Finding the Fourth Proportional to 18,810.69, 28,228.26 and 8,147.46

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Solution

The fourth proportional to 18,810.69, 28,228.26 and 8,147.46 is: 12,226.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,810.69 : 28,228.26 = 8,147.46 : x
  2. Step 2: Convert to fraction form
    18,810.69/28,228.26 = 8,147.46/x
  3. Step 3: Cross multiply
    18,810.69x = 28,228.26 × 8,147.46
  4. Step 4: Simplify right side
    18,810.69x = 229,988,619.22
  5. Step 5: Solve for x
    x = 229,988,619.22/18,810.69
  6. Step 6: Final answer
    x = 12,226.49

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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.