Home / 12,900.88-19,352.36-5,505.42

Finding the Fourth Proportional to 12,900.88, 19,352.36 and 5,505.42

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Solution

The fourth proportional to 12,900.88, 19,352.36 and 5,505.42 is: 8,258.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,900.88 : 19,352.36 = 5,505.42 : x
  2. Step 2: Convert to fraction form
    12,900.88/19,352.36 = 5,505.42/x
  3. Step 3: Cross multiply
    12,900.88x = 19,352.36 × 5,505.42
  4. Step 4: Simplify right side
    12,900.88x = 106,542,869.79
  5. Step 5: Solve for x
    x = 106,542,869.79/12,900.88
  6. Step 6: Final answer
    x = 8,258.57

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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.