Home / 19,987.44-29,984.38-10,122.72

Finding the Fourth Proportional to 19,987.44, 29,984.38 and 10,122.72

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Solution

The fourth proportional to 19,987.44, 29,984.38 and 10,122.72 is: 15,185.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,987.44 : 29,984.38 = 10,122.72 : x
  2. Step 2: Convert to fraction form
    19,987.44/29,984.38 = 10,122.72/x
  3. Step 3: Cross multiply
    19,987.44x = 29,984.38 × 10,122.72
  4. Step 4: Simplify right side
    19,987.44x = 303,523,483.11
  5. Step 5: Solve for x
    x = 303,523,483.11/19,987.44
  6. Step 6: Final answer
    x = 15,185.71

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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.