Home / 12,579.06-18,870.87-10,259.63

Finding the Fourth Proportional to 12,579.06, 18,870.87 and 10,259.63

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Solution

The fourth proportional to 12,579.06, 18,870.87 and 10,259.63 is: 15,391.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.06 : 18,870.87 = 10,259.63 : x
  2. Step 2: Convert to fraction form
    12,579.06/18,870.87 = 10,259.63/x
  3. Step 3: Cross multiply
    12,579.06x = 18,870.87 × 10,259.63
  4. Step 4: Simplify right side
    12,579.06x = 193,608,049.62
  5. Step 5: Solve for x
    x = 193,608,049.62/12,579.06
  6. Step 6: Final answer
    x = 15,391.30

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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.