Home / 21,718.28-29,969.43-12,766.16

Finding the Fourth Proportional to 21,718.28, 29,969.43 and 12,766.16

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Solution

The fourth proportional to 21,718.28, 29,969.43 and 12,766.16 is: 17,616.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,718.28 : 29,969.43 = 12,766.16 : x
  2. Step 2: Convert to fraction form
    21,718.28/29,969.43 = 12,766.16/x
  3. Step 3: Cross multiply
    21,718.28x = 29,969.43 × 12,766.16
  4. Step 4: Simplify right side
    21,718.28x = 382,594,388.64
  5. Step 5: Solve for x
    x = 382,594,388.64/21,718.28
  6. Step 6: Final answer
    x = 17,616.24

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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.