Home / 13,278.56-19,911.36-7,733.84

Finding the Fourth Proportional to 13,278.56, 19,911.36 and 7,733.84

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Solution

The fourth proportional to 13,278.56, 19,911.36 and 7,733.84 is: 11,596.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.56 : 19,911.36 = 7,733.84 : x
  2. Step 2: Convert to fraction form
    13,278.56/19,911.36 = 7,733.84/x
  3. Step 3: Cross multiply
    13,278.56x = 19,911.36 × 7,733.84
  4. Step 4: Simplify right side
    13,278.56x = 153,991,272.42
  5. Step 5: Solve for x
    x = 153,991,272.42/13,278.56
  6. Step 6: Final answer
    x = 11,596.99

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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.