Home / 12,919.53-19,378.89-3,685.53

Finding the Fourth Proportional to 12,919.53, 19,378.89 and 3,685.53

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Solution

The fourth proportional to 12,919.53, 19,378.89 and 3,685.53 is: 5,528.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.53 : 19,378.89 = 3,685.53 : x
  2. Step 2: Convert to fraction form
    12,919.53/19,378.89 = 3,685.53/x
  3. Step 3: Cross multiply
    12,919.53x = 19,378.89 × 3,685.53
  4. Step 4: Simplify right side
    12,919.53x = 71,421,480.46
  5. Step 5: Solve for x
    x = 71,421,480.46/12,919.53
  6. Step 6: Final answer
    x = 5,528.18

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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.