Home / 13,855.08-19,120.32-8,265

Finding the Fourth Proportional to 13,855.08, 19,120.32 and 8,265

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Solution

The fourth proportional to 13,855.08, 19,120.32 and 8,265 is: 11,405.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,855.08 : 19,120.32 = 8,265 : x
  2. Step 2: Convert to fraction form
    13,855.08/19,120.32 = 8,265/x
  3. Step 3: Cross multiply
    13,855.08x = 19,120.32 × 8,265
  4. Step 4: Simplify right side
    13,855.08x = 158,029,444.80
  5. Step 5: Solve for x
    x = 158,029,444.80/13,855.08
  6. Step 6: Final answer
    x = 11,405.88

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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.