Home / 12,138.66-18,204.21-4,741.07

Finding the Fourth Proportional to 12,138.66, 18,204.21 and 4,741.07

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Solution

The fourth proportional to 12,138.66, 18,204.21 and 4,741.07 is: 7,110.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.66 : 18,204.21 = 4,741.07 : x
  2. Step 2: Convert to fraction form
    12,138.66/18,204.21 = 4,741.07/x
  3. Step 3: Cross multiply
    12,138.66x = 18,204.21 × 4,741.07
  4. Step 4: Simplify right side
    12,138.66x = 86,307,342.88
  5. Step 5: Solve for x
    x = 86,307,342.88/12,138.66
  6. Step 6: Final answer
    x = 7,110.12

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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.