Home / 27,919.56-38,529.78-15,345.12

Finding the Fourth Proportional to 27,919.56, 38,529.78 and 15,345.12

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Solution

The fourth proportional to 27,919.56, 38,529.78 and 15,345.12 is: 21,176.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,919.56 : 38,529.78 = 15,345.12 : x
  2. Step 2: Convert to fraction form
    27,919.56/38,529.78 = 15,345.12/x
  3. Step 3: Cross multiply
    27,919.56x = 38,529.78 × 15,345.12
  4. Step 4: Simplify right side
    27,919.56x = 591,244,097.67
  5. Step 5: Solve for x
    x = 591,244,097.67/27,919.56
  6. Step 6: Final answer
    x = 21,176.70

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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.