Home / 19,407.05-29,121.86-8,161.57

Finding the Fourth Proportional to 19,407.05, 29,121.86 and 8,161.57

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Solution

The fourth proportional to 19,407.05, 29,121.86 and 8,161.57 is: 12,247.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,407.05 : 29,121.86 = 8,161.57 : x
  2. Step 2: Convert to fraction form
    19,407.05/29,121.86 = 8,161.57/x
  3. Step 3: Cross multiply
    19,407.05x = 29,121.86 × 8,161.57
  4. Step 4: Simplify right side
    19,407.05x = 237,679,912.50
  5. Step 5: Solve for x
    x = 237,679,912.50/19,407.05
  6. Step 6: Final answer
    x = 12,247.09

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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.