Home / 12,650.81-18,979.45-4,330.89

Finding the Fourth Proportional to 12,650.81, 18,979.45 and 4,330.89

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Solution

The fourth proportional to 12,650.81, 18,979.45 and 4,330.89 is: 6,497.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,650.81 : 18,979.45 = 4,330.89 : x
  2. Step 2: Convert to fraction form
    12,650.81/18,979.45 = 4,330.89/x
  3. Step 3: Cross multiply
    12,650.81x = 18,979.45 × 4,330.89
  4. Step 4: Simplify right side
    12,650.81x = 82,197,915.62
  5. Step 5: Solve for x
    x = 82,197,915.62/12,650.81
  6. Step 6: Final answer
    x = 6,497.45

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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.