Home / 14,694.79-20,278.75-7,980.37

Finding the Fourth Proportional to 14,694.79, 20,278.75 and 7,980.37

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Solution

The fourth proportional to 14,694.79, 20,278.75 and 7,980.37 is: 11,012.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,694.79 : 20,278.75 = 7,980.37 : x
  2. Step 2: Convert to fraction form
    14,694.79/20,278.75 = 7,980.37/x
  3. Step 3: Cross multiply
    14,694.79x = 20,278.75 × 7,980.37
  4. Step 4: Simplify right side
    14,694.79x = 161,831,928.14
  5. Step 5: Solve for x
    x = 161,831,928.14/14,694.79
  6. Step 6: Final answer
    x = 11,012.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.