Home / 28,648.39-42,921.73-11,971.66

Finding the Fourth Proportional to 28,648.39, 42,921.73 and 11,971.66

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Solution

The fourth proportional to 28,648.39, 42,921.73 and 11,971.66 is: 17,936.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,648.39 : 42,921.73 = 11,971.66 : x
  2. Step 2: Convert to fraction form
    28,648.39/42,921.73 = 11,971.66/x
  3. Step 3: Cross multiply
    28,648.39x = 42,921.73 × 11,971.66
  4. Step 4: Simplify right side
    28,648.39x = 513,844,358.17
  5. Step 5: Solve for x
    x = 513,844,358.17/28,648.39
  6. Step 6: Final answer
    x = 17,936.24

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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.