Home / 20,528.86-30,791.69-12,632.44

Finding the Fourth Proportional to 20,528.86, 30,791.69 and 12,632.44

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Solution

The fourth proportional to 20,528.86, 30,791.69 and 12,632.44 is: 18,947.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,528.86 : 30,791.69 = 12,632.44 : x
  2. Step 2: Convert to fraction form
    20,528.86/30,791.69 = 12,632.44/x
  3. Step 3: Cross multiply
    20,528.86x = 30,791.69 × 12,632.44
  4. Step 4: Simplify right side
    20,528.86x = 388,974,176.42
  5. Step 5: Solve for x
    x = 388,974,176.42/20,528.86
  6. Step 6: Final answer
    x = 18,947.68

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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.