Home / 12,183.80-18,275.70-5,258.30

Finding the Fourth Proportional to 12,183.80, 18,275.70 and 5,258.30

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Solution

The fourth proportional to 12,183.80, 18,275.70 and 5,258.30 is: 7,887.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,183.80 : 18,275.70 = 5,258.30 : x
  2. Step 2: Convert to fraction form
    12,183.80/18,275.70 = 5,258.30/x
  3. Step 3: Cross multiply
    12,183.80x = 18,275.70 × 5,258.30
  4. Step 4: Simplify right side
    12,183.80x = 96,099,113.31
  5. Step 5: Solve for x
    x = 96,099,113.31/12,183.80
  6. Step 6: Final answer
    x = 7,887.45

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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.