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Finding the Fourth Proportional to 10,294.70, 14,206.69 and 5,578.98

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Solution

The fourth proportional to 10,294.70, 14,206.69 and 5,578.98 is: 7,698.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,294.70 : 14,206.69 = 5,578.98 : x
  2. Step 2: Convert to fraction form
    10,294.70/14,206.69 = 5,578.98/x
  3. Step 3: Cross multiply
    10,294.70x = 14,206.69 × 5,578.98
  4. Step 4: Simplify right side
    10,294.70x = 79,258,793.07
  5. Step 5: Solve for x
    x = 79,258,793.07/10,294.70
  6. Step 6: Final answer
    x = 7,698.99

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.