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Finding the Fourth Proportional to 16,401.78, 24,605.10 and 8,611.20

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Solution

The fourth proportional to 16,401.78, 24,605.10 and 8,611.20 is: 12,918.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,401.78 : 24,605.10 = 8,611.20 : x
  2. Step 2: Convert to fraction form
    16,401.78/24,605.10 = 8,611.20/x
  3. Step 3: Cross multiply
    16,401.78x = 24,605.10 × 8,611.20
  4. Step 4: Simplify right side
    16,401.78x = 211,879,437.12
  5. Step 5: Solve for x
    x = 211,879,437.12/16,401.78
  6. Step 6: Final answer
    x = 12,918.08

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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.