Home / 13,317.21-19,983.78-11,955.74

Finding the Fourth Proportional to 13,317.21, 19,983.78 and 11,955.74

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Solution

The fourth proportional to 13,317.21, 19,983.78 and 11,955.74 is: 17,940.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,317.21 : 19,983.78 = 11,955.74 : x
  2. Step 2: Convert to fraction form
    13,317.21/19,983.78 = 11,955.74/x
  3. Step 3: Cross multiply
    13,317.21x = 19,983.78 × 11,955.74
  4. Step 4: Simplify right side
    13,317.21x = 238,920,777.98
  5. Step 5: Solve for x
    x = 238,920,777.98/13,317.21
  6. Step 6: Final answer
    x = 17,940.75

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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.