Home / 31,111.20-46,672.80-13,341.60

Finding the Fourth Proportional to 31,111.20, 46,672.80 and 13,341.60

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Solution

The fourth proportional to 31,111.20, 46,672.80 and 13,341.60 is: 20,014.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,111.20 : 46,672.80 = 13,341.60 : x
  2. Step 2: Convert to fraction form
    31,111.20/46,672.80 = 13,341.60/x
  3. Step 3: Cross multiply
    31,111.20x = 46,672.80 × 13,341.60
  4. Step 4: Simplify right side
    31,111.20x = 622,689,828.48
  5. Step 5: Solve for x
    x = 622,689,828.48/31,111.20
  6. Step 6: Final answer
    x = 20,014.97

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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.