Home / 12,878.44-19,319.10-4,111.36

Finding the Fourth Proportional to 12,878.44, 19,319.10 and 4,111.36

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Solution

The fourth proportional to 12,878.44, 19,319.10 and 4,111.36 is: 6,167.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,878.44 : 19,319.10 = 4,111.36 : x
  2. Step 2: Convert to fraction form
    12,878.44/19,319.10 = 4,111.36/x
  3. Step 3: Cross multiply
    12,878.44x = 19,319.10 × 4,111.36
  4. Step 4: Simplify right side
    12,878.44x = 79,427,774.98
  5. Step 5: Solve for x
    x = 79,427,774.98/12,878.44
  6. Step 6: Final answer
    x = 6,167.50

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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.