Home / 12,939.01-19,412.60-4,174.61

Finding the Fourth Proportional to 12,939.01, 19,412.60 and 4,174.61

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Solution

The fourth proportional to 12,939.01, 19,412.60 and 4,174.61 is: 6,263.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.01 : 19,412.60 = 4,174.61 : x
  2. Step 2: Convert to fraction form
    12,939.01/19,412.60 = 4,174.61/x
  3. Step 3: Cross multiply
    12,939.01x = 19,412.60 × 4,174.61
  4. Step 4: Simplify right side
    12,939.01x = 81,039,916.15
  5. Step 5: Solve for x
    x = 81,039,916.15/12,939.01
  6. Step 6: Final answer
    x = 6,263.23

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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.