Home / 27,999.40-38,645.70-19,628.20

Finding the Fourth Proportional to 27,999.40, 38,645.70 and 19,628.20

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Solution

The fourth proportional to 27,999.40, 38,645.70 and 19,628.20 is: 27,091.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,999.40 : 38,645.70 = 19,628.20 : x
  2. Step 2: Convert to fraction form
    27,999.40/38,645.70 = 19,628.20/x
  3. Step 3: Cross multiply
    27,999.40x = 38,645.70 × 19,628.20
  4. Step 4: Simplify right side
    27,999.40x = 758,545,528.74
  5. Step 5: Solve for x
    x = 758,545,528.74/27,999.40
  6. Step 6: Final answer
    x = 27,091.49

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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.