Home / 20,225.47-27,911.30-11,273.55

Finding the Fourth Proportional to 20,225.47, 27,911.30 and 11,273.55

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Solution

The fourth proportional to 20,225.47, 27,911.30 and 11,273.55 is: 15,557.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,225.47 : 27,911.30 = 11,273.55 : x
  2. Step 2: Convert to fraction form
    20,225.47/27,911.30 = 11,273.55/x
  3. Step 3: Cross multiply
    20,225.47x = 27,911.30 × 11,273.55
  4. Step 4: Simplify right side
    20,225.47x = 314,659,436.12
  5. Step 5: Solve for x
    x = 314,659,436.12/20,225.47
  6. Step 6: Final answer
    x = 15,557.58

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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.