Home / 12,241.60-18,362.40-8,785.60

Finding the Fourth Proportional to 12,241.60, 18,362.40 and 8,785.60

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Solution

The fourth proportional to 12,241.60, 18,362.40 and 8,785.60 is: 13,178.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,241.60 : 18,362.40 = 8,785.60 : x
  2. Step 2: Convert to fraction form
    12,241.60/18,362.40 = 8,785.60/x
  3. Step 3: Cross multiply
    12,241.60x = 18,362.40 × 8,785.60
  4. Step 4: Simplify right side
    12,241.60x = 161,324,701.44
  5. Step 5: Solve for x
    x = 161,324,701.44/12,241.60
  6. Step 6: Final answer
    x = 13,178.40

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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.