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Finding the Fourth Proportional to 12,492.91, 18,731.03 and 5,095.38

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Solution

The fourth proportional to 12,492.91, 18,731.03 and 5,095.38 is: 7,639.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,492.91 : 18,731.03 = 5,095.38 : x
  2. Step 2: Convert to fraction form
    12,492.91/18,731.03 = 5,095.38/x
  3. Step 3: Cross multiply
    12,492.91x = 18,731.03 × 5,095.38
  4. Step 4: Simplify right side
    12,492.91x = 95,441,690.16
  5. Step 5: Solve for x
    x = 95,441,690.16/12,492.91
  6. Step 6: Final answer
    x = 7,639.67

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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.