Home / 21,321.74-31,982.61-7,467.50

Finding the Fourth Proportional to 21,321.74, 31,982.61 and 7,467.50

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Solution

The fourth proportional to 21,321.74, 31,982.61 and 7,467.50 is: 11,201.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,321.74 : 31,982.61 = 7,467.50 : x
  2. Step 2: Convert to fraction form
    21,321.74/31,982.61 = 7,467.50/x
  3. Step 3: Cross multiply
    21,321.74x = 31,982.61 × 7,467.50
  4. Step 4: Simplify right side
    21,321.74x = 238,830,140.18
  5. Step 5: Solve for x
    x = 238,830,140.18/21,321.74
  6. Step 6: Final answer
    x = 11,201.25

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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.