Home / 15,276.18-21,081.42-8,992.20

Finding the Fourth Proportional to 15,276.18, 21,081.42 and 8,992.20

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Solution

The fourth proportional to 15,276.18, 21,081.42 and 8,992.20 is: 12,409.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,276.18 : 21,081.42 = 8,992.20 : x
  2. Step 2: Convert to fraction form
    15,276.18/21,081.42 = 8,992.20/x
  3. Step 3: Cross multiply
    15,276.18x = 21,081.42 × 8,992.20
  4. Step 4: Simplify right side
    15,276.18x = 189,568,344.92
  5. Step 5: Solve for x
    x = 189,568,344.92/15,276.18
  6. Step 6: Final answer
    x = 12,409.41

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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.