Home / 12,579.92-18,873.40-10,261.80

Finding the Fourth Proportional to 12,579.92, 18,873.40 and 10,261.80

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Solution

The fourth proportional to 12,579.92, 18,873.40 and 10,261.80 is: 15,395.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.92 : 18,873.40 = 10,261.80 : x
  2. Step 2: Convert to fraction form
    12,579.92/18,873.40 = 10,261.80/x
  3. Step 3: Cross multiply
    12,579.92x = 18,873.40 × 10,261.80
  4. Step 4: Simplify right side
    12,579.92x = 193,675,056.12
  5. Step 5: Solve for x
    x = 193,675,056.12/12,579.92
  6. Step 6: Final answer
    x = 15,395.57

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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.