Home / 19,390.62-29,028.51-11,971.23

Finding the Fourth Proportional to 19,390.62, 29,028.51 and 11,971.23

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Solution

The fourth proportional to 19,390.62, 29,028.51 and 11,971.23 is: 17,921.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,390.62 : 29,028.51 = 11,971.23 : x
  2. Step 2: Convert to fraction form
    19,390.62/29,028.51 = 11,971.23/x
  3. Step 3: Cross multiply
    19,390.62x = 29,028.51 × 11,971.23
  4. Step 4: Simplify right side
    19,390.62x = 347,506,969.77
  5. Step 5: Solve for x
    x = 347,506,969.77/19,390.62
  6. Step 6: Final answer
    x = 17,921.40

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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.