Home / 12,811.32-19,217.97-4,917.63

Finding the Fourth Proportional to 12,811.32, 19,217.97 and 4,917.63

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Solution

The fourth proportional to 12,811.32, 19,217.97 and 4,917.63 is: 7,376.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,811.32 : 19,217.97 = 4,917.63 : x
  2. Step 2: Convert to fraction form
    12,811.32/19,217.97 = 4,917.63/x
  3. Step 3: Cross multiply
    12,811.32x = 19,217.97 × 4,917.63
  4. Step 4: Simplify right side
    12,811.32x = 94,506,865.81
  5. Step 5: Solve for x
    x = 94,506,865.81/12,811.32
  6. Step 6: Final answer
    x = 7,376.83

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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.