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Finding the Fourth Proportional to 18,996.81, 28,492.56 and 6,516.63

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Solution

The fourth proportional to 18,996.81, 28,492.56 and 6,516.63 is: 9,774.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,996.81 : 28,492.56 = 6,516.63 : x
  2. Step 2: Convert to fraction form
    18,996.81/28,492.56 = 6,516.63/x
  3. Step 3: Cross multiply
    18,996.81x = 28,492.56 × 6,516.63
  4. Step 4: Simplify right side
    18,996.81x = 185,675,471.27
  5. Step 5: Solve for x
    x = 185,675,471.27/18,996.81
  6. Step 6: Final answer
    x = 9,774.03

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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.