Home / 27,828.30-38,403.19-15,081.51

Finding the Fourth Proportional to 27,828.30, 38,403.19 and 15,081.51

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Solution

The fourth proportional to 27,828.30, 38,403.19 and 15,081.51 is: 20,812.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,828.30 : 38,403.19 = 15,081.51 : x
  2. Step 2: Convert to fraction form
    27,828.30/38,403.19 = 15,081.51/x
  3. Step 3: Cross multiply
    27,828.30x = 38,403.19 × 15,081.51
  4. Step 4: Simplify right side
    27,828.30x = 579,177,998.45
  5. Step 5: Solve for x
    x = 579,177,998.45/27,828.30
  6. Step 6: Final answer
    x = 20,812.55

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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.