Home / 13,158-19,739.70-4,273.80

Finding the Fourth Proportional to 13,158, 19,739.70 and 4,273.80

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Solution

The fourth proportional to 13,158, 19,739.70 and 4,273.80 is: 6,411.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,158 : 19,739.70 = 4,273.80 : x
  2. Step 2: Convert to fraction form
    13,158/19,739.70 = 4,273.80/x
  3. Step 3: Cross multiply
    13,158x = 19,739.70 × 4,273.80
  4. Step 4: Simplify right side
    13,158x = 84,363,529.86
  5. Step 5: Solve for x
    x = 84,363,529.86/13,158
  6. Step 6: Final answer
    x = 6,411.58

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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.