Home / 19,416.12-29,119.35-8,321.55

Finding the Fourth Proportional to 19,416.12, 29,119.35 and 8,321.55

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Solution

The fourth proportional to 19,416.12, 29,119.35 and 8,321.55 is: 12,480.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,416.12 : 29,119.35 = 8,321.55 : x
  2. Step 2: Convert to fraction form
    19,416.12/29,119.35 = 8,321.55/x
  3. Step 3: Cross multiply
    19,416.12x = 29,119.35 × 8,321.55
  4. Step 4: Simplify right side
    19,416.12x = 242,318,002.20
  5. Step 5: Solve for x
    x = 242,318,002.20/19,416.12
  6. Step 6: Final answer
    x = 12,480.25

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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.