Home / 20,802.35-28,703.89-11,850.03

Finding the Fourth Proportional to 20,802.35, 28,703.89 and 11,850.03

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Solution

The fourth proportional to 20,802.35, 28,703.89 and 11,850.03 is: 16,351.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,802.35 : 28,703.89 = 11,850.03 : x
  2. Step 2: Convert to fraction form
    20,802.35/28,703.89 = 11,850.03/x
  3. Step 3: Cross multiply
    20,802.35x = 28,703.89 × 11,850.03
  4. Step 4: Simplify right side
    20,802.35x = 340,141,957.62
  5. Step 5: Solve for x
    x = 340,141,957.62/20,802.35
  6. Step 6: Final answer
    x = 16,351.13

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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.