Home / 20,694.09-31,040.91-13,705.37

Finding the Fourth Proportional to 20,694.09, 31,040.91 and 13,705.37

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Solution

The fourth proportional to 20,694.09, 31,040.91 and 13,705.37 is: 20,557.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,694.09 : 31,040.91 = 13,705.37 : x
  2. Step 2: Convert to fraction form
    20,694.09/31,040.91 = 13,705.37/x
  3. Step 3: Cross multiply
    20,694.09x = 31,040.91 × 13,705.37
  4. Step 4: Simplify right side
    20,694.09x = 425,427,234.29
  5. Step 5: Solve for x
    x = 425,427,234.29/20,694.09
  6. Step 6: Final answer
    x = 20,557.91

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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.