Home / 13,144.41-19,715.28-4,378.38

Finding the Fourth Proportional to 13,144.41, 19,715.28 and 4,378.38

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Solution

The fourth proportional to 13,144.41, 19,715.28 and 4,378.38 is: 6,567.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,144.41 : 19,715.28 = 4,378.38 : x
  2. Step 2: Convert to fraction form
    13,144.41/19,715.28 = 4,378.38/x
  3. Step 3: Cross multiply
    13,144.41x = 19,715.28 × 4,378.38
  4. Step 4: Simplify right side
    13,144.41x = 86,320,987.65
  5. Step 5: Solve for x
    x = 86,320,987.65/13,144.41
  6. Step 6: Final answer
    x = 6,567.13

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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.