Home / 10,620.02-15,930.44-5,419.82

Finding the Fourth Proportional to 10,620.02, 15,930.44 and 5,419.82

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Solution

The fourth proportional to 10,620.02, 15,930.44 and 5,419.82 is: 8,129.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,620.02 : 15,930.44 = 5,419.82 : x
  2. Step 2: Convert to fraction form
    10,620.02/15,930.44 = 5,419.82/x
  3. Step 3: Cross multiply
    10,620.02x = 15,930.44 × 5,419.82
  4. Step 4: Simplify right side
    10,620.02x = 86,340,090.22
  5. Step 5: Solve for x
    x = 86,340,090.22/10,620.02
  6. Step 6: Final answer
    x = 8,129.94

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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.