Home / 12,080.40-18,111.60-6,241.20

Finding the Fourth Proportional to 12,080.40, 18,111.60 and 6,241.20

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Solution

The fourth proportional to 12,080.40, 18,111.60 and 6,241.20 is: 9,357.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,080.40 : 18,111.60 = 6,241.20 : x
  2. Step 2: Convert to fraction form
    12,080.40/18,111.60 = 6,241.20/x
  3. Step 3: Cross multiply
    12,080.40x = 18,111.60 × 6,241.20
  4. Step 4: Simplify right side
    12,080.40x = 113,038,117.92
  5. Step 5: Solve for x
    x = 113,038,117.92/12,080.40
  6. Step 6: Final answer
    x = 9,357.15

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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.