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Finding the Fourth Proportional to 19,243.80, 28,869.42 and 7,396.68

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Solution

The fourth proportional to 19,243.80, 28,869.42 and 7,396.68 is: 11,096.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,243.80 : 28,869.42 = 7,396.68 : x
  2. Step 2: Convert to fraction form
    19,243.80/28,869.42 = 7,396.68/x
  3. Step 3: Cross multiply
    19,243.80x = 28,869.42 × 7,396.68
  4. Step 4: Simplify right side
    19,243.80x = 213,537,861.53
  5. Step 5: Solve for x
    x = 213,537,861.53/19,243.80
  6. Step 6: Final answer
    x = 11,096.45

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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.