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Finding the Fourth Proportional to 10,883.87, 15,019.53 and 7,099.85

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Solution

The fourth proportional to 10,883.87, 15,019.53 and 7,099.85 is: 9,797.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,883.87 : 15,019.53 = 7,099.85 : x
  2. Step 2: Convert to fraction form
    10,883.87/15,019.53 = 7,099.85/x
  3. Step 3: Cross multiply
    10,883.87x = 15,019.53 × 7,099.85
  4. Step 4: Simplify right side
    10,883.87x = 106,636,420.99
  5. Step 5: Solve for x
    x = 106,636,420.99/10,883.87
  6. Step 6: Final answer
    x = 9,797.66

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1.5x scale

Why These Related Problems?

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