Home / 12,840.49-19,260.74-8,879.29

Finding the Fourth Proportional to 12,840.49, 19,260.74 and 8,879.29

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Solution

The fourth proportional to 12,840.49, 19,260.74 and 8,879.29 is: 13,318.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,840.49 : 19,260.74 = 8,879.29 : x
  2. Step 2: Convert to fraction form
    12,840.49/19,260.74 = 8,879.29/x
  3. Step 3: Cross multiply
    12,840.49x = 19,260.74 × 8,879.29
  4. Step 4: Simplify right side
    12,840.49x = 171,021,603.53
  5. Step 5: Solve for x
    x = 171,021,603.53/12,840.49
  6. Step 6: Final answer
    x = 13,318.93

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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.