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Finding the Fourth Proportional to 33,186.60, 49,779.90 and 12,407.40

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Solution

The fourth proportional to 33,186.60, 49,779.90 and 12,407.40 is: 18,611.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,186.60 : 49,779.90 = 12,407.40 : x
  2. Step 2: Convert to fraction form
    33,186.60/49,779.90 = 12,407.40/x
  3. Step 3: Cross multiply
    33,186.60x = 49,779.90 × 12,407.40
  4. Step 4: Simplify right side
    33,186.60x = 617,639,131.26
  5. Step 5: Solve for x
    x = 617,639,131.26/33,186.60
  6. Step 6: Final answer
    x = 18,611.10

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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.