Home / 31,682.40-47,485.20-14,133.60

Finding the Fourth Proportional to 31,682.40, 47,485.20 and 14,133.60

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Solution

The fourth proportional to 31,682.40, 47,485.20 and 14,133.60 is: 21,183.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,682.40 : 47,485.20 = 14,133.60 : x
  2. Step 2: Convert to fraction form
    31,682.40/47,485.20 = 14,133.60/x
  3. Step 3: Cross multiply
    31,682.40x = 47,485.20 × 14,133.60
  4. Step 4: Simplify right side
    31,682.40x = 671,136,822.72
  5. Step 5: Solve for x
    x = 671,136,822.72/31,682.40
  6. Step 6: Final answer
    x = 21,183.27

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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.