Home / 19,943.40-29,939.40-10,077.60

Finding the Fourth Proportional to 19,943.40, 29,939.40 and 10,077.60

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Solution

The fourth proportional to 19,943.40, 29,939.40 and 10,077.60 is: 15,128.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,943.40 : 29,939.40 = 10,077.60 : x
  2. Step 2: Convert to fraction form
    19,943.40/29,939.40 = 10,077.60/x
  3. Step 3: Cross multiply
    19,943.40x = 29,939.40 × 10,077.60
  4. Step 4: Simplify right side
    19,943.40x = 301,717,297.44
  5. Step 5: Solve for x
    x = 301,717,297.44/19,943.40
  6. Step 6: Final answer
    x = 15,128.68

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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.