Home / 21,201.37-31,803.01-7,160.15

Finding the Fourth Proportional to 21,201.37, 31,803.01 and 7,160.15

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Solution

The fourth proportional to 21,201.37, 31,803.01 and 7,160.15 is: 10,740.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,201.37 : 31,803.01 = 7,160.15 : x
  2. Step 2: Convert to fraction form
    21,201.37/31,803.01 = 7,160.15/x
  3. Step 3: Cross multiply
    21,201.37x = 31,803.01 × 7,160.15
  4. Step 4: Simplify right side
    21,201.37x = 227,714,383.66
  5. Step 5: Solve for x
    x = 227,714,383.66/21,201.37
  6. Step 6: Final answer
    x = 10,740.55

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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.