Home / 12,651.20-18,981.12-11,424.32

Finding the Fourth Proportional to 12,651.20, 18,981.12 and 11,424.32

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Solution

The fourth proportional to 12,651.20, 18,981.12 and 11,424.32 is: 17,140.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,651.20 : 18,981.12 = 11,424.32 : x
  2. Step 2: Convert to fraction form
    12,651.20/18,981.12 = 11,424.32/x
  3. Step 3: Cross multiply
    12,651.20x = 18,981.12 × 11,424.32
  4. Step 4: Simplify right side
    12,651.20x = 216,846,388.84
  5. Step 5: Solve for x
    x = 216,846,388.84/12,651.20
  6. Step 6: Final answer
    x = 17,140.38

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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.