Home / 12,919.80-19,365.58-5,528.66

Finding the Fourth Proportional to 12,919.80, 19,365.58 and 5,528.66

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Solution

The fourth proportional to 12,919.80, 19,365.58 and 5,528.66 is: 8,286.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.80 : 19,365.58 = 5,528.66 : x
  2. Step 2: Convert to fraction form
    12,919.80/19,365.58 = 5,528.66/x
  3. Step 3: Cross multiply
    12,919.80x = 19,365.58 × 5,528.66
  4. Step 4: Simplify right side
    12,919.80x = 107,065,617.61
  5. Step 5: Solve for x
    x = 107,065,617.61/12,919.80
  6. Step 6: Final answer
    x = 8,286.94

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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.