Home / 12,215.55-18,308.31-6,954.99

Finding the Fourth Proportional to 12,215.55, 18,308.31 and 6,954.99

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Solution

The fourth proportional to 12,215.55, 18,308.31 and 6,954.99 is: 10,423.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.55 : 18,308.31 = 6,954.99 : x
  2. Step 2: Convert to fraction form
    12,215.55/18,308.31 = 6,954.99/x
  3. Step 3: Cross multiply
    12,215.55x = 18,308.31 × 6,954.99
  4. Step 4: Simplify right side
    12,215.55x = 127,334,112.97
  5. Step 5: Solve for x
    x = 127,334,112.97/12,215.55
  6. Step 6: Final answer
    x = 10,423.94

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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.