Home / 12,329.40-18,485.10-4,930.20

Finding the Fourth Proportional to 12,329.40, 18,485.10 and 4,930.20

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Solution

The fourth proportional to 12,329.40, 18,485.10 and 4,930.20 is: 7,391.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,329.40 : 18,485.10 = 4,930.20 : x
  2. Step 2: Convert to fraction form
    12,329.40/18,485.10 = 4,930.20/x
  3. Step 3: Cross multiply
    12,329.40x = 18,485.10 × 4,930.20
  4. Step 4: Simplify right side
    12,329.40x = 91,135,240.02
  5. Step 5: Solve for x
    x = 91,135,240.02/12,329.40
  6. Step 6: Final answer
    x = 7,391.70

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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.