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Finding the Fourth Proportional to 40,513.50, 60,770.52 and 12,811.50

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Solution

The fourth proportional to 40,513.50, 60,770.52 and 12,811.50 is: 19,217.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,513.50 : 60,770.52 = 12,811.50 : x
  2. Step 2: Convert to fraction form
    40,513.50/60,770.52 = 12,811.50/x
  3. Step 3: Cross multiply
    40,513.50x = 60,770.52 × 12,811.50
  4. Step 4: Simplify right side
    40,513.50x = 778,561,516.98
  5. Step 5: Solve for x
    x = 778,561,516.98/40,513.50
  6. Step 6: Final answer
    x = 19,217.34

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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.