Home / 19,271.21-28,913.88-13,767.86

Finding the Fourth Proportional to 19,271.21, 28,913.88 and 13,767.86

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Solution

The fourth proportional to 19,271.21, 28,913.88 and 13,767.86 is: 20,656.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,271.21 : 28,913.88 = 13,767.86 : x
  2. Step 2: Convert to fraction form
    19,271.21/28,913.88 = 13,767.86/x
  3. Step 3: Cross multiply
    19,271.21x = 28,913.88 × 13,767.86
  4. Step 4: Simplify right side
    19,271.21x = 398,082,107.33
  5. Step 5: Solve for x
    x = 398,082,107.33/19,271.21
  6. Step 6: Final answer
    x = 20,656.84

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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.