Home / 12,620.48-18,930.56-4,298.24

Finding the Fourth Proportional to 12,620.48, 18,930.56 and 4,298.24

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Solution

The fourth proportional to 12,620.48, 18,930.56 and 4,298.24 is: 6,447.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,620.48 : 18,930.56 = 4,298.24 : x
  2. Step 2: Convert to fraction form
    12,620.48/18,930.56 = 4,298.24/x
  3. Step 3: Cross multiply
    12,620.48x = 18,930.56 × 4,298.24
  4. Step 4: Simplify right side
    12,620.48x = 81,368,090.21
  5. Step 5: Solve for x
    x = 81,368,090.21/12,620.48
  6. Step 6: Final answer
    x = 6,447.31

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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.