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Finding the Fourth Proportional to 13,808.80, 19,048.28 and 8,502.48

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Solution

The fourth proportional to 13,808.80, 19,048.28 and 8,502.48 is: 11,728.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,808.80 : 19,048.28 = 8,502.48 : x
  2. Step 2: Convert to fraction form
    13,808.80/19,048.28 = 8,502.48/x
  3. Step 3: Cross multiply
    13,808.80x = 19,048.28 × 8,502.48
  4. Step 4: Simplify right side
    13,808.80x = 161,957,619.73
  5. Step 5: Solve for x
    x = 161,957,619.73/13,808.80
  6. Step 6: Final answer
    x = 11,728.58

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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.