Home / 12,918.32-19,377.93-4,152.09

Finding the Fourth Proportional to 12,918.32, 19,377.93 and 4,152.09

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Solution

The fourth proportional to 12,918.32, 19,377.93 and 4,152.09 is: 6,228.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,918.32 : 19,377.93 = 4,152.09 : x
  2. Step 2: Convert to fraction form
    12,918.32/19,377.93 = 4,152.09/x
  3. Step 3: Cross multiply
    12,918.32x = 19,377.93 × 4,152.09
  4. Step 4: Simplify right side
    12,918.32x = 80,458,997.61
  5. Step 5: Solve for x
    x = 80,458,997.61/12,918.32
  6. Step 6: Final answer
    x = 6,228.29

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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.