Home / 20,798.23-31,209.63-10,938.27

Finding the Fourth Proportional to 20,798.23, 31,209.63 and 10,938.27

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Solution

The fourth proportional to 20,798.23, 31,209.63 and 10,938.27 is: 16,413.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,798.23 : 31,209.63 = 10,938.27 : x
  2. Step 2: Convert to fraction form
    20,798.23/31,209.63 = 10,938.27/x
  3. Step 3: Cross multiply
    20,798.23x = 31,209.63 × 10,938.27
  4. Step 4: Simplify right side
    20,798.23x = 341,379,359.54
  5. Step 5: Solve for x
    x = 341,379,359.54/20,798.23
  6. Step 6: Final answer
    x = 16,413.87

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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.