Home / 12,885.25-19,330.62-4,000.39

Finding the Fourth Proportional to 12,885.25, 19,330.62 and 4,000.39

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Solution

The fourth proportional to 12,885.25, 19,330.62 and 4,000.39 is: 6,001.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,885.25 : 19,330.62 = 4,000.39 : x
  2. Step 2: Convert to fraction form
    12,885.25/19,330.62 = 4,000.39/x
  3. Step 3: Cross multiply
    12,885.25x = 19,330.62 × 4,000.39
  4. Step 4: Simplify right side
    12,885.25x = 77,330,018.94
  5. Step 5: Solve for x
    x = 77,330,018.94/12,885.25
  6. Step 6: Final answer
    x = 6,001.44

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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.