Home / 21,766.48-30,022.16-19,979.62

Finding the Fourth Proportional to 21,766.48, 30,022.16 and 19,979.62

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Solution

The fourth proportional to 21,766.48, 30,022.16 and 19,979.62 is: 27,557.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,766.48 : 30,022.16 = 19,979.62 : x
  2. Step 2: Convert to fraction form
    21,766.48/30,022.16 = 19,979.62/x
  3. Step 3: Cross multiply
    21,766.48x = 30,022.16 × 19,979.62
  4. Step 4: Simplify right side
    21,766.48x = 599,831,348.38
  5. Step 5: Solve for x
    x = 599,831,348.38/21,766.48
  6. Step 6: Final answer
    x = 27,557.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.