Home / 13,136.40-19,698.78-3,774.30

Finding the Fourth Proportional to 13,136.40, 19,698.78 and 3,774.30

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Solution

The fourth proportional to 13,136.40, 19,698.78 and 3,774.30 is: 5,659.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,136.40 : 19,698.78 = 3,774.30 : x
  2. Step 2: Convert to fraction form
    13,136.40/19,698.78 = 3,774.30/x
  3. Step 3: Cross multiply
    13,136.40x = 19,698.78 × 3,774.30
  4. Step 4: Simplify right side
    13,136.40x = 74,349,105.35
  5. Step 5: Solve for x
    x = 74,349,105.35/13,136.40
  6. Step 6: Final answer
    x = 5,659.78

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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.