Home / 13,672.72-20,479.32-8,987.44

Finding the Fourth Proportional to 13,672.72, 20,479.32 and 8,987.44

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Solution

The fourth proportional to 13,672.72, 20,479.32 and 8,987.44 is: 13,461.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.72 : 20,479.32 = 8,987.44 : x
  2. Step 2: Convert to fraction form
    13,672.72/20,479.32 = 8,987.44/x
  3. Step 3: Cross multiply
    13,672.72x = 20,479.32 × 8,987.44
  4. Step 4: Simplify right side
    13,672.72x = 184,056,659.74
  5. Step 5: Solve for x
    x = 184,056,659.74/13,672.72
  6. Step 6: Final answer
    x = 13,461.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.