Home / 12,729.20-19,000.10-11,837.84

Finding the Fourth Proportional to 12,729.20, 19,000.10 and 11,837.84

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Solution

The fourth proportional to 12,729.20, 19,000.10 and 11,837.84 is: 17,669.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,729.20 : 19,000.10 = 11,837.84 : x
  2. Step 2: Convert to fraction form
    12,729.20/19,000.10 = 11,837.84/x
  3. Step 3: Cross multiply
    12,729.20x = 19,000.10 × 11,837.84
  4. Step 4: Simplify right side
    12,729.20x = 224,920,143.78
  5. Step 5: Solve for x
    x = 224,920,143.78/12,729.20
  6. Step 6: Final answer
    x = 17,669.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.