Home / 12,486.48-18,738.96-8,529.36

Finding the Fourth Proportional to 12,486.48, 18,738.96 and 8,529.36

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Solution

The fourth proportional to 12,486.48, 18,738.96 and 8,529.36 is: 12,800.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,486.48 : 18,738.96 = 8,529.36 : x
  2. Step 2: Convert to fraction form
    12,486.48/18,738.96 = 8,529.36/x
  3. Step 3: Cross multiply
    12,486.48x = 18,738.96 × 8,529.36
  4. Step 4: Simplify right side
    12,486.48x = 159,831,335.87
  5. Step 5: Solve for x
    x = 159,831,335.87/12,486.48
  6. Step 6: Final answer
    x = 12,800.35

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.