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Finding the Fourth Proportional to 22,339.99, 30,829.55 and 12,268.85

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Solution

The fourth proportional to 22,339.99, 30,829.55 and 12,268.85 is: 16,931.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,339.99 : 30,829.55 = 12,268.85 : x
  2. Step 2: Convert to fraction form
    22,339.99/30,829.55 = 12,268.85/x
  3. Step 3: Cross multiply
    22,339.99x = 30,829.55 × 12,268.85
  4. Step 4: Simplify right side
    22,339.99x = 378,243,140.25
  5. Step 5: Solve for x
    x = 378,243,140.25/22,339.99
  6. Step 6: Final answer
    x = 16,931.22

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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.