Home / 19,421.21-26,800.41-11,880.20

Finding the Fourth Proportional to 19,421.21, 26,800.41 and 11,880.20

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Solution

The fourth proportional to 19,421.21, 26,800.41 and 11,880.20 is: 16,394.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,421.21 : 26,800.41 = 11,880.20 : x
  2. Step 2: Convert to fraction form
    19,421.21/26,800.41 = 11,880.20/x
  3. Step 3: Cross multiply
    19,421.21x = 26,800.41 × 11,880.20
  4. Step 4: Simplify right side
    19,421.21x = 318,394,230.88
  5. Step 5: Solve for x
    x = 318,394,230.88/19,421.21
  6. Step 6: Final answer
    x = 16,394.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.