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Finding the Fourth Proportional to 19,006.20, 28,510.08 and 5,679

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Solution

The fourth proportional to 19,006.20, 28,510.08 and 5,679 is: 8,518.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,006.20 : 28,510.08 = 5,679 : x
  2. Step 2: Convert to fraction form
    19,006.20/28,510.08 = 5,679/x
  3. Step 3: Cross multiply
    19,006.20x = 28,510.08 × 5,679
  4. Step 4: Simplify right side
    19,006.20x = 161,908,744.32
  5. Step 5: Solve for x
    x = 161,908,744.32/19,006.20
  6. Step 6: Final answer
    x = 8,518.73

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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.