Home / 19,429.88-29,163.04-8,905.55

Finding the Fourth Proportional to 19,429.88, 29,163.04 and 8,905.55

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Solution

The fourth proportional to 19,429.88, 29,163.04 and 8,905.55 is: 13,366.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,429.88 : 29,163.04 = 8,905.55 : x
  2. Step 2: Convert to fraction form
    19,429.88/29,163.04 = 8,905.55/x
  3. Step 3: Cross multiply
    19,429.88x = 29,163.04 × 8,905.55
  4. Step 4: Simplify right side
    19,429.88x = 259,712,742.79
  5. Step 5: Solve for x
    x = 259,712,742.79/19,429.88
  6. Step 6: Final answer
    x = 13,366.67

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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.