Home / 12,029.64-18,000.72-9,930.12

Finding the Fourth Proportional to 12,029.64, 18,000.72 and 9,930.12

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Solution

The fourth proportional to 12,029.64, 18,000.72 and 9,930.12 is: 14,859.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,029.64 : 18,000.72 = 9,930.12 : x
  2. Step 2: Convert to fraction form
    12,029.64/18,000.72 = 9,930.12/x
  3. Step 3: Cross multiply
    12,029.64x = 18,000.72 × 9,930.12
  4. Step 4: Simplify right side
    12,029.64x = 178,749,309.69
  5. Step 5: Solve for x
    x = 178,749,309.69/12,029.64
  6. Step 6: Final answer
    x = 14,859.07

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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.