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Finding the Fourth Proportional to 27,718.79, 41,607.79 and 11,931.64

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Solution

The fourth proportional to 27,718.79, 41,607.79 and 11,931.64 is: 17,910.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,718.79 : 41,607.79 = 11,931.64 : x
  2. Step 2: Convert to fraction form
    27,718.79/41,607.79 = 11,931.64/x
  3. Step 3: Cross multiply
    27,718.79x = 41,607.79 × 11,931.64
  4. Step 4: Simplify right side
    27,718.79x = 496,449,037.63
  5. Step 5: Solve for x
    x = 496,449,037.63/27,718.79
  6. Step 6: Final answer
    x = 17,910.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.