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Finding the Fourth Proportional to 13,392, 18,483.36 and 9,083.28

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Solution

The fourth proportional to 13,392, 18,483.36 and 9,083.28 is: 12,536.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,392 : 18,483.36 = 9,083.28 : x
  2. Step 2: Convert to fraction form
    13,392/18,483.36 = 9,083.28/x
  3. Step 3: Cross multiply
    13,392x = 18,483.36 × 9,083.28
  4. Step 4: Simplify right side
    13,392x = 167,889,534.22
  5. Step 5: Solve for x
    x = 167,889,534.22/13,392
  6. Step 6: Final answer
    x = 12,536.55

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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.