Home / 13,250.12-19,878.89-4,485.69

Finding the Fourth Proportional to 13,250.12, 19,878.89 and 4,485.69

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Solution

The fourth proportional to 13,250.12, 19,878.89 and 4,485.69 is: 6,729.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,250.12 : 19,878.89 = 4,485.69 : x
  2. Step 2: Convert to fraction form
    13,250.12/19,878.89 = 4,485.69/x
  3. Step 3: Cross multiply
    13,250.12x = 19,878.89 × 4,485.69
  4. Step 4: Simplify right side
    13,250.12x = 89,170,515.66
  5. Step 5: Solve for x
    x = 89,170,515.66/13,250.12
  6. Step 6: Final answer
    x = 6,729.79

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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.