Home / 13,972.79-20,959.16-4,112.06

Finding the Fourth Proportional to 13,972.79, 20,959.16 and 4,112.06

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Solution

The fourth proportional to 13,972.79, 20,959.16 and 4,112.06 is: 6,168.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,972.79 : 20,959.16 = 4,112.06 : x
  2. Step 2: Convert to fraction form
    13,972.79/20,959.16 = 4,112.06/x
  3. Step 3: Cross multiply
    13,972.79x = 20,959.16 × 4,112.06
  4. Step 4: Simplify right side
    13,972.79x = 86,185,198.11
  5. Step 5: Solve for x
    x = 86,185,198.11/13,972.79
  6. Step 6: Final answer
    x = 6,168.07

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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.