Home / 13,644.48-18,819.84-8,055.36

Finding the Fourth Proportional to 13,644.48, 18,819.84 and 8,055.36

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Solution

The fourth proportional to 13,644.48, 18,819.84 and 8,055.36 is: 11,110.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,644.48 : 18,819.84 = 8,055.36 : x
  2. Step 2: Convert to fraction form
    13,644.48/18,819.84 = 8,055.36/x
  3. Step 3: Cross multiply
    13,644.48x = 18,819.84 × 8,055.36
  4. Step 4: Simplify right side
    13,644.48x = 151,600,586.34
  5. Step 5: Solve for x
    x = 151,600,586.34/13,644.48
  6. Step 6: Final answer
    x = 11,110.76

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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.