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Finding the Fourth Proportional to 13,080.58, 18,048.04 and 8,298.78

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Solution

The fourth proportional to 13,080.58, 18,048.04 and 8,298.78 is: 11,450.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,080.58 : 18,048.04 = 8,298.78 : x
  2. Step 2: Convert to fraction form
    13,080.58/18,048.04 = 8,298.78/x
  3. Step 3: Cross multiply
    13,080.58x = 18,048.04 × 8,298.78
  4. Step 4: Simplify right side
    13,080.58x = 149,776,713.39
  5. Step 5: Solve for x
    x = 149,776,713.39/13,080.58
  6. Step 6: Final answer
    x = 11,450.31

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Half scale
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Double scale
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Similar ratio
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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.