Home / 12,201.87-18,309.69-5,628.05

Finding the Fourth Proportional to 12,201.87, 18,309.69 and 5,628.05

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Solution

The fourth proportional to 12,201.87, 18,309.69 and 5,628.05 is: 8,445.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,201.87 : 18,309.69 = 5,628.05 : x
  2. Step 2: Convert to fraction form
    12,201.87/18,309.69 = 5,628.05/x
  3. Step 3: Cross multiply
    12,201.87x = 18,309.69 × 5,628.05
  4. Step 4: Simplify right side
    12,201.87x = 103,047,862.58
  5. Step 5: Solve for x
    x = 103,047,862.58/12,201.87
  6. Step 6: Final answer
    x = 8,445.25

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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.