Home / 19,978.26-29,973.36-5,938.74

Finding the Fourth Proportional to 19,978.26, 29,973.36 and 5,938.74

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Solution

The fourth proportional to 19,978.26, 29,973.36 and 5,938.74 is: 8,909.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,978.26 : 29,973.36 = 5,938.74 : x
  2. Step 2: Convert to fraction form
    19,978.26/29,973.36 = 5,938.74/x
  3. Step 3: Cross multiply
    19,978.26x = 29,973.36 × 5,938.74
  4. Step 4: Simplify right side
    19,978.26x = 178,003,991.97
  5. Step 5: Solve for x
    x = 178,003,991.97/19,978.26
  6. Step 6: Final answer
    x = 8,909.88

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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.