Home / 20,519.62-30,775.59-12,776.26

Finding the Fourth Proportional to 20,519.62, 30,775.59 and 12,776.26

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Solution

The fourth proportional to 20,519.62, 30,775.59 and 12,776.26 is: 19,162.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,519.62 : 30,775.59 = 12,776.26 : x
  2. Step 2: Convert to fraction form
    20,519.62/30,775.59 = 12,776.26/x
  3. Step 3: Cross multiply
    20,519.62x = 30,775.59 × 12,776.26
  4. Step 4: Simplify right side
    20,519.62x = 393,196,939.49
  5. Step 5: Solve for x
    x = 393,196,939.49/20,519.62
  6. Step 6: Final answer
    x = 19,162.00

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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.