Home / 40,918.10-61,377.21-12,840.31

Finding the Fourth Proportional to 40,918.10, 61,377.21 and 12,840.31

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Solution

The fourth proportional to 40,918.10, 61,377.21 and 12,840.31 is: 19,260.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,918.10 : 61,377.21 = 12,840.31 : x
  2. Step 2: Convert to fraction form
    40,918.10/61,377.21 = 12,840.31/x
  3. Step 3: Cross multiply
    40,918.10x = 61,377.21 × 12,840.31
  4. Step 4: Simplify right side
    40,918.10x = 788,102,249.89
  5. Step 5: Solve for x
    x = 788,102,249.89/40,918.10
  6. Step 6: Final answer
    x = 19,260.48

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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.