Home / 12,889.76-19,330.79-4,122.32

Finding the Fourth Proportional to 12,889.76, 19,330.79 and 4,122.32

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Solution

The fourth proportional to 12,889.76, 19,330.79 and 4,122.32 is: 6,182.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,889.76 : 19,330.79 = 4,122.32 : x
  2. Step 2: Convert to fraction form
    12,889.76/19,330.79 = 4,122.32/x
  3. Step 3: Cross multiply
    12,889.76x = 19,330.79 × 4,122.32
  4. Step 4: Simplify right side
    12,889.76x = 79,687,584.97
  5. Step 5: Solve for x
    x = 79,687,584.97/12,889.76
  6. Step 6: Final answer
    x = 6,182.24

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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.