Home / 13,767.52-18,999.72-8,102.32

Finding the Fourth Proportional to 13,767.52, 18,999.72 and 8,102.32

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Solution

The fourth proportional to 13,767.52, 18,999.72 and 8,102.32 is: 11,181.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,767.52 : 18,999.72 = 8,102.32 : x
  2. Step 2: Convert to fraction form
    13,767.52/18,999.72 = 8,102.32/x
  3. Step 3: Cross multiply
    13,767.52x = 18,999.72 × 8,102.32
  4. Step 4: Simplify right side
    13,767.52x = 153,941,811.35
  5. Step 5: Solve for x
    x = 153,941,811.35/13,767.52
  6. Step 6: Final answer
    x = 11,181.52

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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.