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Finding the Fourth Proportional to 12,985.92, 19,482.12 and 5,194.53

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Solution

The fourth proportional to 12,985.92, 19,482.12 and 5,194.53 is: 7,793.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,985.92 : 19,482.12 = 5,194.53 : x
  2. Step 2: Convert to fraction form
    12,985.92/19,482.12 = 5,194.53/x
  3. Step 3: Cross multiply
    12,985.92x = 19,482.12 × 5,194.53
  4. Step 4: Simplify right side
    12,985.92x = 101,200,456.80
  5. Step 5: Solve for x
    x = 101,200,456.80/12,985.92
  6. Step 6: Final answer
    x = 7,793.09

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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.