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Finding the Fourth Proportional to 12,803.51, 17,679.76 and 8,031.49

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Solution

The fourth proportional to 12,803.51, 17,679.76 and 8,031.49 is: 11,090.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,803.51 : 17,679.76 = 8,031.49 : x
  2. Step 2: Convert to fraction form
    12,803.51/17,679.76 = 8,031.49/x
  3. Step 3: Cross multiply
    12,803.51x = 17,679.76 × 8,031.49
  4. Step 4: Simplify right side
    12,803.51x = 141,994,751.36
  5. Step 5: Solve for x
    x = 141,994,751.36/12,803.51
  6. Step 6: Final answer
    x = 11,090.30

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.