Home / 20,564.26-30,775.11-12,663.25

Finding the Fourth Proportional to 20,564.26, 30,775.11 and 12,663.25

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Solution

The fourth proportional to 20,564.26, 30,775.11 and 12,663.25 is: 18,950.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,564.26 : 30,775.11 = 12,663.25 : x
  2. Step 2: Convert to fraction form
    20,564.26/30,775.11 = 12,663.25/x
  3. Step 3: Cross multiply
    20,564.26x = 30,775.11 × 12,663.25
  4. Step 4: Simplify right side
    20,564.26x = 389,712,911.71
  5. Step 5: Solve for x
    x = 389,712,911.71/20,564.26
  6. Step 6: Final answer
    x = 18,950.98

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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.