Home / 27,931.91-38,546.69-15,185.81

Finding the Fourth Proportional to 27,931.91, 38,546.69 and 15,185.81

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Solution

The fourth proportional to 27,931.91, 38,546.69 and 15,185.81 is: 20,956.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,931.91 : 38,546.69 = 15,185.81 : x
  2. Step 2: Convert to fraction form
    27,931.91/38,546.69 = 15,185.81/x
  3. Step 3: Cross multiply
    27,931.91x = 38,546.69 × 15,185.81
  4. Step 4: Simplify right side
    27,931.91x = 585,362,730.91
  5. Step 5: Solve for x
    x = 585,362,730.91/27,931.91
  6. Step 6: Final answer
    x = 20,956.78

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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.