Home / 20,791.28-31,199.58-10,937.60

Finding the Fourth Proportional to 20,791.28, 31,199.58 and 10,937.60

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Solution

The fourth proportional to 20,791.28, 31,199.58 and 10,937.60 is: 16,413.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,791.28 : 31,199.58 = 10,937.60 : x
  2. Step 2: Convert to fraction form
    20,791.28/31,199.58 = 10,937.60/x
  3. Step 3: Cross multiply
    20,791.28x = 31,199.58 × 10,937.60
  4. Step 4: Simplify right side
    20,791.28x = 341,248,526.21
  5. Step 5: Solve for x
    x = 341,248,526.21/20,791.28
  6. Step 6: Final answer
    x = 16,413.06

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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.