Home / 12,939.24-19,406.10-5,917.26

Finding the Fourth Proportional to 12,939.24, 19,406.10 and 5,917.26

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Solution

The fourth proportional to 12,939.24, 19,406.10 and 5,917.26 is: 8,874.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.24 : 19,406.10 = 5,917.26 : x
  2. Step 2: Convert to fraction form
    12,939.24/19,406.10 = 5,917.26/x
  3. Step 3: Cross multiply
    12,939.24x = 19,406.10 × 5,917.26
  4. Step 4: Simplify right side
    12,939.24x = 114,830,939.29
  5. Step 5: Solve for x
    x = 114,830,939.29/12,939.24
  6. Step 6: Final answer
    x = 8,874.63

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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.