Home / 20,181.52-30,271.61-10,839.78

Finding the Fourth Proportional to 20,181.52, 30,271.61 and 10,839.78

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Solution

The fourth proportional to 20,181.52, 30,271.61 and 10,839.78 is: 16,259.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,181.52 : 30,271.61 = 10,839.78 : x
  2. Step 2: Convert to fraction form
    20,181.52/30,271.61 = 10,839.78/x
  3. Step 3: Cross multiply
    20,181.52x = 30,271.61 × 10,839.78
  4. Step 4: Simplify right side
    20,181.52x = 328,137,619.75
  5. Step 5: Solve for x
    x = 328,137,619.75/20,181.52
  6. Step 6: Final answer
    x = 16,259.31

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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.