Home / 12,739.95-19,102.50-4,939.65

Finding the Fourth Proportional to 12,739.95, 19,102.50 and 4,939.65

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Solution

The fourth proportional to 12,739.95, 19,102.50 and 4,939.65 is: 7,406.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,739.95 : 19,102.50 = 4,939.65 : x
  2. Step 2: Convert to fraction form
    12,739.95/19,102.50 = 4,939.65/x
  3. Step 3: Cross multiply
    12,739.95x = 19,102.50 × 4,939.65
  4. Step 4: Simplify right side
    12,739.95x = 94,359,664.13
  5. Step 5: Solve for x
    x = 94,359,664.13/12,739.95
  6. Step 6: Final answer
    x = 7,406.60

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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.