Home / 19,311.21-28,977.77-10,426.42

Finding the Fourth Proportional to 19,311.21, 28,977.77 and 10,426.42

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Solution

The fourth proportional to 19,311.21, 28,977.77 and 10,426.42 is: 15,645.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,311.21 : 28,977.77 = 10,426.42 : x
  2. Step 2: Convert to fraction form
    19,311.21/28,977.77 = 10,426.42/x
  3. Step 3: Cross multiply
    19,311.21x = 28,977.77 × 10,426.42
  4. Step 4: Simplify right side
    19,311.21x = 302,134,203.66
  5. Step 5: Solve for x
    x = 302,134,203.66/19,311.21
  6. Step 6: Final answer
    x = 15,645.54

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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.