Home / 12,721.44-19,049.32-8,784.84

Finding the Fourth Proportional to 12,721.44, 19,049.32 and 8,784.84

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Solution

The fourth proportional to 12,721.44, 19,049.32 and 8,784.84 is: 13,154.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,721.44 : 19,049.32 = 8,784.84 : x
  2. Step 2: Convert to fraction form
    12,721.44/19,049.32 = 8,784.84/x
  3. Step 3: Cross multiply
    12,721.44x = 19,049.32 × 8,784.84
  4. Step 4: Simplify right side
    12,721.44x = 167,345,228.31
  5. Step 5: Solve for x
    x = 167,345,228.31/12,721.44
  6. Step 6: Final answer
    x = 13,154.58

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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.