Home / 31,457.06-47,163.72-13,917.32

Finding the Fourth Proportional to 31,457.06, 47,163.72 and 13,917.32

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Solution

The fourth proportional to 31,457.06, 47,163.72 and 13,917.32 is: 20,866.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,457.06 : 47,163.72 = 13,917.32 : x
  2. Step 2: Convert to fraction form
    31,457.06/47,163.72 = 13,917.32/x
  3. Step 3: Cross multiply
    31,457.06x = 47,163.72 × 13,917.32
  4. Step 4: Simplify right side
    31,457.06x = 656,392,583.63
  5. Step 5: Solve for x
    x = 656,392,583.63/31,457.06
  6. Step 6: Final answer
    x = 20,866.30

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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.