Home / 31,982.40-47,973.60-11,203.20

Finding the Fourth Proportional to 31,982.40, 47,973.60 and 11,203.20

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Solution

The fourth proportional to 31,982.40, 47,973.60 and 11,203.20 is: 16,804.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,982.40 : 47,973.60 = 11,203.20 : x
  2. Step 2: Convert to fraction form
    31,982.40/47,973.60 = 11,203.20/x
  3. Step 3: Cross multiply
    31,982.40x = 47,973.60 × 11,203.20
  4. Step 4: Simplify right side
    31,982.40x = 537,457,835.52
  5. Step 5: Solve for x
    x = 537,457,835.52/31,982.40
  6. Step 6: Final answer
    x = 16,804.80

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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.