Home / 27,958.19-38,579.42-15,856.22

Finding the Fourth Proportional to 27,958.19, 38,579.42 and 15,856.22

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Solution

The fourth proportional to 27,958.19, 38,579.42 and 15,856.22 is: 21,879.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,958.19 : 38,579.42 = 15,856.22 : x
  2. Step 2: Convert to fraction form
    27,958.19/38,579.42 = 15,856.22/x
  3. Step 3: Cross multiply
    27,958.19x = 38,579.42 × 15,856.22
  4. Step 4: Simplify right side
    27,958.19x = 611,723,955.01
  5. Step 5: Solve for x
    x = 611,723,955.01/27,958.19
  6. Step 6: Final answer
    x = 21,879.95

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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.