Home / 21,718.87-29,965.91-12,763.10

Finding the Fourth Proportional to 21,718.87, 29,965.91 and 12,763.10

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Solution

The fourth proportional to 21,718.87, 29,965.91 and 12,763.10 is: 17,609.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,718.87 : 29,965.91 = 12,763.10 : x
  2. Step 2: Convert to fraction form
    21,718.87/29,965.91 = 12,763.10/x
  3. Step 3: Cross multiply
    21,718.87x = 29,965.91 × 12,763.10
  4. Step 4: Simplify right side
    21,718.87x = 382,457,917.02
  5. Step 5: Solve for x
    x = 382,457,917.02/21,718.87
  6. Step 6: Final answer
    x = 17,609.48

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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.