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Finding the Fourth Proportional to 13,879.52, 19,153.02 and 8,574.80

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Solution

The fourth proportional to 13,879.52, 19,153.02 and 8,574.80 is: 11,832.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,879.52 : 19,153.02 = 8,574.80 : x
  2. Step 2: Convert to fraction form
    13,879.52/19,153.02 = 8,574.80/x
  3. Step 3: Cross multiply
    13,879.52x = 19,153.02 × 8,574.80
  4. Step 4: Simplify right side
    13,879.52x = 164,233,220.13
  5. Step 5: Solve for x
    x = 164,233,220.13/13,879.52
  6. Step 6: Final answer
    x = 11,832.78

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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.