Home / 13,479.60-18,598.04-8,170.86

Finding the Fourth Proportional to 13,479.60, 18,598.04 and 8,170.86

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Solution

The fourth proportional to 13,479.60, 18,598.04 and 8,170.86 is: 11,273.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479.60 : 18,598.04 = 8,170.86 : x
  2. Step 2: Convert to fraction form
    13,479.60/18,598.04 = 8,170.86/x
  3. Step 3: Cross multiply
    13,479.60x = 18,598.04 × 8,170.86
  4. Step 4: Simplify right side
    13,479.60x = 151,961,981.11
  5. Step 5: Solve for x
    x = 151,961,981.11/13,479.60
  6. Step 6: Final answer
    x = 11,273.48

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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.