Home / 12,939.72-19,392.02-5,911.02

Finding the Fourth Proportional to 12,939.72, 19,392.02 and 5,911.02

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Solution

The fourth proportional to 12,939.72, 19,392.02 and 5,911.02 is: 8,858.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,939.72 : 19,392.02 = 5,911.02 : x
  2. Step 2: Convert to fraction form
    12,939.72/19,392.02 = 5,911.02/x
  3. Step 3: Cross multiply
    12,939.72x = 19,392.02 × 5,911.02
  4. Step 4: Simplify right side
    12,939.72x = 114,626,618.06
  5. Step 5: Solve for x
    x = 114,626,618.06/12,939.72
  6. Step 6: Final answer
    x = 8,858.51

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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.