Home / 19,359.67-29,057.33-11,978.55

Finding the Fourth Proportional to 19,359.67, 29,057.33 and 11,978.55

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Solution

The fourth proportional to 19,359.67, 29,057.33 and 11,978.55 is: 17,978.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,359.67 : 29,057.33 = 11,978.55 : x
  2. Step 2: Convert to fraction form
    19,359.67/29,057.33 = 11,978.55/x
  3. Step 3: Cross multiply
    19,359.67x = 29,057.33 × 11,978.55
  4. Step 4: Simplify right side
    19,359.67x = 348,064,475.09
  5. Step 5: Solve for x
    x = 348,064,475.09/19,359.67
  6. Step 6: Final answer
    x = 17,978.84

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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.