Home / 13,396.29-18,484.52-8,087.55

Finding the Fourth Proportional to 13,396.29, 18,484.52 and 8,087.55

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Solution

The fourth proportional to 13,396.29, 18,484.52 and 8,087.55 is: 11,159.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,396.29 : 18,484.52 = 8,087.55 : x
  2. Step 2: Convert to fraction form
    13,396.29/18,484.52 = 8,087.55/x
  3. Step 3: Cross multiply
    13,396.29x = 18,484.52 × 8,087.55
  4. Step 4: Simplify right side
    13,396.29x = 149,494,439.29
  5. Step 5: Solve for x
    x = 149,494,439.29/13,396.29
  6. Step 6: Final answer
    x = 11,159.39

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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.