Home / 30,878.63-46,379.93-18,422.96

Finding the Fourth Proportional to 30,878.63, 46,379.93 and 18,422.96

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Solution

The fourth proportional to 30,878.63, 46,379.93 and 18,422.96 is: 27,671.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,878.63 : 46,379.93 = 18,422.96 : x
  2. Step 2: Convert to fraction form
    30,878.63/46,379.93 = 18,422.96/x
  3. Step 3: Cross multiply
    30,878.63x = 46,379.93 × 18,422.96
  4. Step 4: Simplify right side
    30,878.63x = 854,455,271.18
  5. Step 5: Solve for x
    x = 854,455,271.18/30,878.63
  6. Step 6: Final answer
    x = 27,671.42

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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.