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Finding the Fourth Proportional to 12,808.86, 19,211.12 and 4,042.50

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Solution

The fourth proportional to 12,808.86, 19,211.12 and 4,042.50 is: 6,063.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,808.86 : 19,211.12 = 4,042.50 : x
  2. Step 2: Convert to fraction form
    12,808.86/19,211.12 = 4,042.50/x
  3. Step 3: Cross multiply
    12,808.86x = 19,211.12 × 4,042.50
  4. Step 4: Simplify right side
    12,808.86x = 77,660,952.60
  5. Step 5: Solve for x
    x = 77,660,952.60/12,808.86
  6. Step 6: Final answer
    x = 6,063.07

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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.