Home / 19,777.03-29,620.18-12,830.47

Finding the Fourth Proportional to 19,777.03, 29,620.18 and 12,830.47

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Solution

The fourth proportional to 19,777.03, 29,620.18 and 12,830.47 is: 19,216.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,777.03 : 29,620.18 = 12,830.47 : x
  2. Step 2: Convert to fraction form
    19,777.03/29,620.18 = 12,830.47/x
  3. Step 3: Cross multiply
    19,777.03x = 29,620.18 × 12,830.47
  4. Step 4: Simplify right side
    19,777.03x = 380,040,830.88
  5. Step 5: Solve for x
    x = 380,040,830.88/19,777.03
  6. Step 6: Final answer
    x = 19,216.27

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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.