Home / 12,000.30-18,005.85-5,423.10

Finding the Fourth Proportional to 12,000.30, 18,005.85 and 5,423.10

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Solution

The fourth proportional to 12,000.30, 18,005.85 and 5,423.10 is: 8,137.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,000.30 : 18,005.85 = 5,423.10 : x
  2. Step 2: Convert to fraction form
    12,000.30/18,005.85 = 5,423.10/x
  3. Step 3: Cross multiply
    12,000.30x = 18,005.85 × 5,423.10
  4. Step 4: Simplify right side
    12,000.30x = 97,647,525.14
  5. Step 5: Solve for x
    x = 97,647,525.14/12,000.30
  6. Step 6: Final answer
    x = 8,137.09

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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.