Home / 31,643.37-43,676.51-19,699.70

Finding the Fourth Proportional to 31,643.37, 43,676.51 and 19,699.70

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Solution

The fourth proportional to 31,643.37, 43,676.51 and 19,699.70 is: 27,190.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,643.37 : 43,676.51 = 19,699.70 : x
  2. Step 2: Convert to fraction form
    31,643.37/43,676.51 = 19,699.70/x
  3. Step 3: Cross multiply
    31,643.37x = 43,676.51 × 19,699.70
  4. Step 4: Simplify right side
    31,643.37x = 860,413,827.17
  5. Step 5: Solve for x
    x = 860,413,827.17/31,643.37
  6. Step 6: Final answer
    x = 27,190.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.