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Finding the Fourth Proportional to 19,199.89, 28,792.90 and 7,356.99

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Solution

The fourth proportional to 19,199.89, 28,792.90 and 7,356.99 is: 11,032.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,199.89 : 28,792.90 = 7,356.99 : x
  2. Step 2: Convert to fraction form
    19,199.89/28,792.90 = 7,356.99/x
  3. Step 3: Cross multiply
    19,199.89x = 28,792.90 × 7,356.99
  4. Step 4: Simplify right side
    19,199.89x = 211,829,077.37
  5. Step 5: Solve for x
    x = 211,829,077.37/19,199.89
  6. Step 6: Final answer
    x = 11,032.83

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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.