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Finding the Fourth Proportional to 16,919.80, 25,379.70 and 16,077.40

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Solution

The fourth proportional to 16,919.80, 25,379.70 and 16,077.40 is: 24,116.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,919.80 : 25,379.70 = 16,077.40 : x
  2. Step 2: Convert to fraction form
    16,919.80/25,379.70 = 16,077.40/x
  3. Step 3: Cross multiply
    16,919.80x = 25,379.70 × 16,077.40
  4. Step 4: Simplify right side
    16,919.80x = 408,039,588.78
  5. Step 5: Solve for x
    x = 408,039,588.78/16,919.80
  6. Step 6: Final answer
    x = 24,116.10

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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.