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Finding the Fourth Proportional to 18,245.70, 27,368.55 and 16,641.90

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Solution

The fourth proportional to 18,245.70, 27,368.55 and 16,641.90 is: 24,962.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,245.70 : 27,368.55 = 16,641.90 : x
  2. Step 2: Convert to fraction form
    18,245.70/27,368.55 = 16,641.90/x
  3. Step 3: Cross multiply
    18,245.70x = 27,368.55 × 16,641.90
  4. Step 4: Simplify right side
    18,245.70x = 455,464,672.25
  5. Step 5: Solve for x
    x = 455,464,672.25/18,245.70
  6. Step 6: Final answer
    x = 24,962.85

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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.