Home / 20,564.55-30,855.06-8,087.72

Finding the Fourth Proportional to 20,564.55, 30,855.06 and 8,087.72

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Solution

The fourth proportional to 20,564.55, 30,855.06 and 8,087.72 is: 12,134.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,564.55 : 30,855.06 = 8,087.72 : x
  2. Step 2: Convert to fraction form
    20,564.55/30,855.06 = 8,087.72/x
  3. Step 3: Cross multiply
    20,564.55x = 30,855.06 × 8,087.72
  4. Step 4: Simplify right side
    20,564.55x = 249,546,931.59
  5. Step 5: Solve for x
    x = 249,546,931.59/20,564.55
  6. Step 6: Final answer
    x = 12,134.81

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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.