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Finding the Fourth Proportional to 19,185.99, 28,762.03 and 7,491.03

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Solution

The fourth proportional to 19,185.99, 28,762.03 and 7,491.03 is: 11,229.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,185.99 : 28,762.03 = 7,491.03 : x
  2. Step 2: Convert to fraction form
    19,185.99/28,762.03 = 7,491.03/x
  3. Step 3: Cross multiply
    19,185.99x = 28,762.03 × 7,491.03
  4. Step 4: Simplify right side
    19,185.99x = 215,457,229.59
  5. Step 5: Solve for x
    x = 215,457,229.59/19,185.99
  6. Step 6: Final answer
    x = 11,229.93

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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.