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Finding the Fourth Proportional to 19,292.60, 28,950.41 and 8,618.12

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Solution

The fourth proportional to 19,292.60, 28,950.41 and 8,618.12 is: 12,932.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,292.60 : 28,950.41 = 8,618.12 : x
  2. Step 2: Convert to fraction form
    19,292.60/28,950.41 = 8,618.12/x
  3. Step 3: Cross multiply
    19,292.60x = 28,950.41 × 8,618.12
  4. Step 4: Simplify right side
    19,292.60x = 249,498,107.43
  5. Step 5: Solve for x
    x = 249,498,107.43/19,292.60
  6. Step 6: Final answer
    x = 12,932.32

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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.