Home / 20,174.55-27,838.73-11,220.62

Finding the Fourth Proportional to 20,174.55, 27,838.73 and 11,220.62

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Solution

The fourth proportional to 20,174.55, 27,838.73 and 11,220.62 is: 15,483.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,174.55 : 27,838.73 = 11,220.62 : x
  2. Step 2: Convert to fraction form
    20,174.55/27,838.73 = 11,220.62/x
  3. Step 3: Cross multiply
    20,174.55x = 27,838.73 × 11,220.62
  4. Step 4: Simplify right side
    20,174.55x = 312,367,615.32
  5. Step 5: Solve for x
    x = 312,367,615.32/20,174.55
  6. Step 6: Final answer
    x = 15,483.25

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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.