Home / 27,959.06-38,597.78-21,571.31

Finding the Fourth Proportional to 27,959.06, 38,597.78 and 21,571.31

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Solution

The fourth proportional to 27,959.06, 38,597.78 and 21,571.31 is: 29,779.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,959.06 : 38,597.78 = 21,571.31 : x
  2. Step 2: Convert to fraction form
    27,959.06/38,597.78 = 21,571.31/x
  3. Step 3: Cross multiply
    27,959.06x = 38,597.78 × 21,571.31
  4. Step 4: Simplify right side
    27,959.06x = 832,604,538.63
  5. Step 5: Solve for x
    x = 832,604,538.63/27,959.06
  6. Step 6: Final answer
    x = 29,779.42

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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.