Home / 21,116.28-29,116.62-15,794.04

Finding the Fourth Proportional to 21,116.28, 29,116.62 and 15,794.04

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Solution

The fourth proportional to 21,116.28, 29,116.62 and 15,794.04 is: 21,777.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,116.28 : 29,116.62 = 15,794.04 : x
  2. Step 2: Convert to fraction form
    21,116.28/29,116.62 = 15,794.04/x
  3. Step 3: Cross multiply
    21,116.28x = 29,116.62 × 15,794.04
  4. Step 4: Simplify right side
    21,116.28x = 459,869,060.94
  5. Step 5: Solve for x
    x = 459,869,060.94/21,116.28
  6. Step 6: Final answer
    x = 21,777.94

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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.