Home / 21,243.60-31,865.25-5,448.60

Finding the Fourth Proportional to 21,243.60, 31,865.25 and 5,448.60

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Solution

The fourth proportional to 21,243.60, 31,865.25 and 5,448.60 is: 8,172.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,243.60 : 31,865.25 = 5,448.60 : x
  2. Step 2: Convert to fraction form
    21,243.60/31,865.25 = 5,448.60/x
  3. Step 3: Cross multiply
    21,243.60x = 31,865.25 × 5,448.60
  4. Step 4: Simplify right side
    21,243.60x = 173,621,001.15
  5. Step 5: Solve for x
    x = 173,621,001.15/21,243.60
  6. Step 6: Final answer
    x = 8,172.86

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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.