Home / 20,291.24-28,000.64-11,339.42

Finding the Fourth Proportional to 20,291.24, 28,000.64 and 11,339.42

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Solution

The fourth proportional to 20,291.24, 28,000.64 and 11,339.42 is: 15,647.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,291.24 : 28,000.64 = 11,339.42 : x
  2. Step 2: Convert to fraction form
    20,291.24/28,000.64 = 11,339.42/x
  3. Step 3: Cross multiply
    20,291.24x = 28,000.64 × 11,339.42
  4. Step 4: Simplify right side
    20,291.24x = 317,510,905.57
  5. Step 5: Solve for x
    x = 317,510,905.57/20,291.24
  6. Step 6: Final answer
    x = 15,647.68

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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.