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Finding the Fourth Proportional to 16,805.40, 25,208.10 and 16,319.40

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Solution

The fourth proportional to 16,805.40, 25,208.10 and 16,319.40 is: 24,479.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,805.40 : 25,208.10 = 16,319.40 : x
  2. Step 2: Convert to fraction form
    16,805.40/25,208.10 = 16,319.40/x
  3. Step 3: Cross multiply
    16,805.40x = 25,208.10 × 16,319.40
  4. Step 4: Simplify right side
    16,805.40x = 411,381,067.14
  5. Step 5: Solve for x
    x = 411,381,067.14/16,805.40
  6. Step 6: Final answer
    x = 24,479.10

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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.