Home / 19,142.54-28,684.49-12,879.35

Finding the Fourth Proportional to 19,142.54, 28,684.49 and 12,879.35

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Solution

The fourth proportional to 19,142.54, 28,684.49 and 12,879.35 is: 19,299.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,142.54 : 28,684.49 = 12,879.35 : x
  2. Step 2: Convert to fraction form
    19,142.54/28,684.49 = 12,879.35/x
  3. Step 3: Cross multiply
    19,142.54x = 28,684.49 × 12,879.35
  4. Step 4: Simplify right side
    19,142.54x = 369,437,475.06
  5. Step 5: Solve for x
    x = 369,437,475.06/19,142.54
  6. Step 6: Final answer
    x = 19,299.30

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1.5x scale

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.