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Finding the Fourth Proportional to 12,364.64, 18,546.74 and 3,931.11

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Solution

The fourth proportional to 12,364.64, 18,546.74 and 3,931.11 is: 5,896.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,364.64 : 18,546.74 = 3,931.11 : x
  2. Step 2: Convert to fraction form
    12,364.64/18,546.74 = 3,931.11/x
  3. Step 3: Cross multiply
    12,364.64x = 18,546.74 × 3,931.11
  4. Step 4: Simplify right side
    12,364.64x = 72,909,182.35
  5. Step 5: Solve for x
    x = 72,909,182.35/12,364.64
  6. Step 6: Final answer
    x = 5,896.59

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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.