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Finding the Fourth Proportional to 22,838.70, 34,234.70 and 12,957.10

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Solution

The fourth proportional to 22,838.70, 34,234.70 and 12,957.10 is: 19,422.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,838.70 : 34,234.70 = 12,957.10 : x
  2. Step 2: Convert to fraction form
    22,838.70/34,234.70 = 12,957.10/x
  3. Step 3: Cross multiply
    22,838.70x = 34,234.70 × 12,957.10
  4. Step 4: Simplify right side
    22,838.70x = 443,582,431.37
  5. Step 5: Solve for x
    x = 443,582,431.37/22,838.70
  6. Step 6: Final answer
    x = 19,422.40

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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.