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Finding the Fourth Proportional to 19,423.92, 29,137.68 and 8,328.12

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Solution

The fourth proportional to 19,423.92, 29,137.68 and 8,328.12 is: 12,492.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,423.92 : 29,137.68 = 8,328.12 : x
  2. Step 2: Convert to fraction form
    19,423.92/29,137.68 = 8,328.12/x
  3. Step 3: Cross multiply
    19,423.92x = 29,137.68 × 8,328.12
  4. Step 4: Simplify right side
    19,423.92x = 242,662,095.56
  5. Step 5: Solve for x
    x = 242,662,095.56/19,423.92
  6. Step 6: Final answer
    x = 12,492.95

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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.