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Finding the Fourth Proportional to 19,310.91, 28,966.53 and 7,624.13

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Solution

The fourth proportional to 19,310.91, 28,966.53 and 7,624.13 is: 11,436.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,310.91 : 28,966.53 = 7,624.13 : x
  2. Step 2: Convert to fraction form
    19,310.91/28,966.53 = 7,624.13/x
  3. Step 3: Cross multiply
    19,310.91x = 28,966.53 × 7,624.13
  4. Step 4: Simplify right side
    19,310.91x = 220,844,474.13
  5. Step 5: Solve for x
    x = 220,844,474.13/19,310.91
  6. Step 6: Final answer
    x = 11,436.26

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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.