Home / 13,861.81-19,131.29-8,201.53

Finding the Fourth Proportional to 13,861.81, 19,131.29 and 8,201.53

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Solution

The fourth proportional to 13,861.81, 19,131.29 and 8,201.53 is: 11,319.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,861.81 : 19,131.29 = 8,201.53 : x
  2. Step 2: Convert to fraction form
    13,861.81/19,131.29 = 8,201.53/x
  3. Step 3: Cross multiply
    13,861.81x = 19,131.29 × 8,201.53
  4. Step 4: Simplify right side
    13,861.81x = 156,905,848.87
  5. Step 5: Solve for x
    x = 156,905,848.87/13,861.81
  6. Step 6: Final answer
    x = 11,319.29

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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.