Home / 11,929.72-17,900.88-8,669.80

Finding the Fourth Proportional to 11,929.72, 17,900.88 and 8,669.80

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Solution

The fourth proportional to 11,929.72, 17,900.88 and 8,669.80 is: 13,009.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,929.72 : 17,900.88 = 8,669.80 : x
  2. Step 2: Convert to fraction form
    11,929.72/17,900.88 = 8,669.80/x
  3. Step 3: Cross multiply
    11,929.72x = 17,900.88 × 8,669.80
  4. Step 4: Simplify right side
    11,929.72x = 155,197,049.42
  5. Step 5: Solve for x
    x = 155,197,049.42/11,929.72
  6. Step 6: Final answer
    x = 13,009.28

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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.