Home / 21,099.72-31,653.10-8,626.44

Finding the Fourth Proportional to 21,099.72, 31,653.10 and 8,626.44

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Solution

The fourth proportional to 21,099.72, 31,653.10 and 8,626.44 is: 12,941.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,099.72 : 31,653.10 = 8,626.44 : x
  2. Step 2: Convert to fraction form
    21,099.72/31,653.10 = 8,626.44/x
  3. Step 3: Cross multiply
    21,099.72x = 31,653.10 × 8,626.44
  4. Step 4: Simplify right side
    21,099.72x = 273,053,567.96
  5. Step 5: Solve for x
    x = 273,053,567.96/21,099.72
  6. Step 6: Final answer
    x = 12,941.10

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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.