Home / 13,861.56-19,129.74-8,556.47

Finding the Fourth Proportional to 13,861.56, 19,129.74 and 8,556.47

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Solution

The fourth proportional to 13,861.56, 19,129.74 and 8,556.47 is: 11,808.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,861.56 : 19,129.74 = 8,556.47 : x
  2. Step 2: Convert to fraction form
    13,861.56/19,129.74 = 8,556.47/x
  3. Step 3: Cross multiply
    13,861.56x = 19,129.74 × 8,556.47
  4. Step 4: Simplify right side
    13,861.56x = 163,682,950.77
  5. Step 5: Solve for x
    x = 163,682,950.77/13,861.56
  6. Step 6: Final answer
    x = 11,808.41

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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.