Home / 27,215.09-37,556.80-15,278.45

Finding the Fourth Proportional to 27,215.09, 37,556.80 and 15,278.45

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Solution

The fourth proportional to 27,215.09, 37,556.80 and 15,278.45 is: 21,084.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,215.09 : 37,556.80 = 15,278.45 : x
  2. Step 2: Convert to fraction form
    27,215.09/37,556.80 = 15,278.45/x
  3. Step 3: Cross multiply
    27,215.09x = 37,556.80 × 15,278.45
  4. Step 4: Simplify right side
    27,215.09x = 573,809,775.30
  5. Step 5: Solve for x
    x = 573,809,775.30/27,215.09
  6. Step 6: Final answer
    x = 21,084.25

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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.