Home / 20,882.16-28,817.91-11,450.88

Finding the Fourth Proportional to 20,882.16, 28,817.91 and 11,450.88

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Solution

The fourth proportional to 20,882.16, 28,817.91 and 11,450.88 is: 15,802.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,882.16 : 28,817.91 = 11,450.88 : x
  2. Step 2: Convert to fraction form
    20,882.16/28,817.91 = 11,450.88/x
  3. Step 3: Cross multiply
    20,882.16x = 28,817.91 × 11,450.88
  4. Step 4: Simplify right side
    20,882.16x = 329,990,429.26
  5. Step 5: Solve for x
    x = 329,990,429.26/20,882.16
  6. Step 6: Final answer
    x = 15,802.50

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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.