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Finding the Fourth Proportional to 13,879.53, 19,153.77 and 7,591.89

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Solution

The fourth proportional to 13,879.53, 19,153.77 and 7,591.89 is: 10,476.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,879.53 : 19,153.77 = 7,591.89 : x
  2. Step 2: Convert to fraction form
    13,879.53/19,153.77 = 7,591.89/x
  3. Step 3: Cross multiply
    13,879.53x = 19,153.77 × 7,591.89
  4. Step 4: Simplify right side
    13,879.53x = 145,413,314.93
  5. Step 5: Solve for x
    x = 145,413,314.93/13,879.53
  6. Step 6: Final answer
    x = 10,476.82

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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.