Home / 20,231.24-27,918.53-11,278.55

Finding the Fourth Proportional to 20,231.24, 27,918.53 and 11,278.55

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Solution

The fourth proportional to 20,231.24, 27,918.53 and 11,278.55 is: 15,564.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,231.24 : 27,918.53 = 11,278.55 : x
  2. Step 2: Convert to fraction form
    20,231.24/27,918.53 = 11,278.55/x
  3. Step 3: Cross multiply
    20,231.24x = 27,918.53 × 11,278.55
  4. Step 4: Simplify right side
    20,231.24x = 314,880,592.23
  5. Step 5: Solve for x
    x = 314,880,592.23/20,231.24
  6. Step 6: Final answer
    x = 15,564.08

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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.