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Finding the Fourth Proportional to 12,798.92, 19,173.76 and 7,854.12

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Solution

The fourth proportional to 12,798.92, 19,173.76 and 7,854.12 is: 11,766.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,798.92 : 19,173.76 = 7,854.12 : x
  2. Step 2: Convert to fraction form
    12,798.92/19,173.76 = 7,854.12/x
  3. Step 3: Cross multiply
    12,798.92x = 19,173.76 × 7,854.12
  4. Step 4: Simplify right side
    12,798.92x = 150,593,011.89
  5. Step 5: Solve for x
    x = 150,593,011.89/12,798.92
  6. Step 6: Final answer
    x = 11,766.07

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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.