Home / 12,281.15-18,408.61-7,004.80

Finding the Fourth Proportional to 12,281.15, 18,408.61 and 7,004.80

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Solution

The fourth proportional to 12,281.15, 18,408.61 and 7,004.80 is: 10,499.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,281.15 : 18,408.61 = 7,004.80 : x
  2. Step 2: Convert to fraction form
    12,281.15/18,408.61 = 7,004.80/x
  3. Step 3: Cross multiply
    12,281.15x = 18,408.61 × 7,004.80
  4. Step 4: Simplify right side
    12,281.15x = 128,948,504.26
  5. Step 5: Solve for x
    x = 128,948,504.26/12,281.15
  6. Step 6: Final answer
    x = 10,499.71

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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.