Home / 13,618.98-18,794.94-8,312.25

Finding the Fourth Proportional to 13,618.98, 18,794.94 and 8,312.25

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Solution

The fourth proportional to 13,618.98, 18,794.94 and 8,312.25 is: 11,471.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,618.98 : 18,794.94 = 8,312.25 : x
  2. Step 2: Convert to fraction form
    13,618.98/18,794.94 = 8,312.25/x
  3. Step 3: Cross multiply
    13,618.98x = 18,794.94 × 8,312.25
  4. Step 4: Simplify right side
    13,618.98x = 156,228,240.02
  5. Step 5: Solve for x
    x = 156,228,240.02/13,618.98
  6. Step 6: Final answer
    x = 11,471.36

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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.