Home / 14,949.97-20,639.81-13,289.37

Finding the Fourth Proportional to 14,949.97, 20,639.81 and 13,289.37

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Solution

The fourth proportional to 14,949.97, 20,639.81 and 13,289.37 is: 18,347.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,949.97 : 20,639.81 = 13,289.37 : x
  2. Step 2: Convert to fraction form
    14,949.97/20,639.81 = 13,289.37/x
  3. Step 3: Cross multiply
    14,949.97x = 20,639.81 × 13,289.37
  4. Step 4: Simplify right side
    14,949.97x = 274,290,027.64
  5. Step 5: Solve for x
    x = 274,290,027.64/14,949.97
  6. Step 6: Final answer
    x = 18,347.20

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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.