Home / 13,606.32-20,409.84-7,028.40

Finding the Fourth Proportional to 13,606.32, 20,409.84 and 7,028.40

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Solution

The fourth proportional to 13,606.32, 20,409.84 and 7,028.40 is: 10,542.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,606.32 : 20,409.84 = 7,028.40 : x
  2. Step 2: Convert to fraction form
    13,606.32/20,409.84 = 7,028.40/x
  3. Step 3: Cross multiply
    13,606.32x = 20,409.84 × 7,028.40
  4. Step 4: Simplify right side
    13,606.32x = 143,448,519.46
  5. Step 5: Solve for x
    x = 143,448,519.46/13,606.32
  6. Step 6: Final answer
    x = 10,542.79

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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.