Home / 20,881.68-28,817.04-11,450.64

Finding the Fourth Proportional to 20,881.68, 28,817.04 and 11,450.64

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Solution

The fourth proportional to 20,881.68, 28,817.04 and 11,450.64 is: 15,802.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,881.68 : 28,817.04 = 11,450.64 : x
  2. Step 2: Convert to fraction form
    20,881.68/28,817.04 = 11,450.64/x
  3. Step 3: Cross multiply
    20,881.68x = 28,817.04 × 11,450.64
  4. Step 4: Simplify right side
    20,881.68x = 329,973,550.91
  5. Step 5: Solve for x
    x = 329,973,550.91/20,881.68
  6. Step 6: Final answer
    x = 15,802.06

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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.