Home / 12,027.20-18,012.64-10,401.60

Finding the Fourth Proportional to 12,027.20, 18,012.64 and 10,401.60

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Solution

The fourth proportional to 12,027.20, 18,012.64 and 10,401.60 is: 15,578.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,027.20 : 18,012.64 = 10,401.60 : x
  2. Step 2: Convert to fraction form
    12,027.20/18,012.64 = 10,401.60/x
  3. Step 3: Cross multiply
    12,027.20x = 18,012.64 × 10,401.60
  4. Step 4: Simplify right side
    12,027.20x = 187,360,276.22
  5. Step 5: Solve for x
    x = 187,360,276.22/12,027.20
  6. Step 6: Final answer
    x = 15,578.05

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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.