Home / 20,564.13-30,813.87-15,895.57

Finding the Fourth Proportional to 20,564.13, 30,813.87 and 15,895.57

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Solution

The fourth proportional to 20,564.13, 30,813.87 and 15,895.57 is: 23,818.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,564.13 : 30,813.87 = 15,895.57 : x
  2. Step 2: Convert to fraction form
    20,564.13/30,813.87 = 15,895.57/x
  3. Step 3: Cross multiply
    20,564.13x = 30,813.87 × 15,895.57
  4. Step 4: Simplify right side
    20,564.13x = 489,803,891.83
  5. Step 5: Solve for x
    x = 489,803,891.83/20,564.13
  6. Step 6: Final answer
    x = 23,818.36

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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.