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Finding the Fourth Proportional to 12,089.40, 16,268.85 and 12,089.40

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Solution

The fourth proportional to 12,089.40, 16,268.85 and 12,089.40 is: 16,268.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,089.40 : 16,268.85 = 12,089.40 : x
  2. Step 2: Convert to fraction form
    12,089.40/16,268.85 = 12,089.40/x
  3. Step 3: Cross multiply
    12,089.40x = 16,268.85 × 12,089.40
  4. Step 4: Simplify right side
    12,089.40x = 196,680,635.19
  5. Step 5: Solve for x
    x = 196,680,635.19/12,089.40
  6. Step 6: Final answer
    x = 16,268.85

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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.