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Finding the Fourth Proportional to 12,086.40, 16,886.40 and 12,086.40

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Solution

The fourth proportional to 12,086.40, 16,886.40 and 12,086.40 is: 16,886.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,086.40 : 16,886.40 = 12,086.40 : x
  2. Step 2: Convert to fraction form
    12,086.40/16,886.40 = 12,086.40/x
  3. Step 3: Cross multiply
    12,086.40x = 16,886.40 × 12,086.40
  4. Step 4: Simplify right side
    12,086.40x = 204,095,784.96
  5. Step 5: Solve for x
    x = 204,095,784.96/12,086.40
  6. Step 6: Final answer
    x = 16,886.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.