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Finding the Fourth Proportional to 14,633.76, 20,194.60 and 7,919.36

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Solution

The fourth proportional to 14,633.76, 20,194.60 and 7,919.36 is: 10,928.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,633.76 : 20,194.60 = 7,919.36 : x
  2. Step 2: Convert to fraction form
    14,633.76/20,194.60 = 7,919.36/x
  3. Step 3: Cross multiply
    14,633.76x = 20,194.60 × 7,919.36
  4. Step 4: Simplify right side
    14,633.76x = 159,928,307.46
  5. Step 5: Solve for x
    x = 159,928,307.46/14,633.76
  6. Step 6: Final answer
    x = 10,928.72

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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.