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Finding the Fourth Proportional to 12,137.80, 16,368.75 and 12,137.80

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Solution

The fourth proportional to 12,137.80, 16,368.75 and 12,137.80 is: 16,368.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,137.80 : 16,368.75 = 12,137.80 : x
  2. Step 2: Convert to fraction form
    12,137.80/16,368.75 = 12,137.80/x
  3. Step 3: Cross multiply
    12,137.80x = 16,368.75 × 12,137.80
  4. Step 4: Simplify right side
    12,137.80x = 198,680,613.75
  5. Step 5: Solve for x
    x = 198,680,613.75/12,137.80
  6. Step 6: Final answer
    x = 16,368.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.