Home / 12,299.90-16,975.68-6,995.21

Finding the Fourth Proportional to 12,299.90, 16,975.68 and 6,995.21

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Solution

The fourth proportional to 12,299.90, 16,975.68 and 6,995.21 is: 9,654.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,299.90 : 16,975.68 = 6,995.21 : x
  2. Step 2: Convert to fraction form
    12,299.90/16,975.68 = 6,995.21/x
  3. Step 3: Cross multiply
    12,299.90x = 16,975.68 × 6,995.21
  4. Step 4: Simplify right side
    12,299.90x = 118,748,446.49
  5. Step 5: Solve for x
    x = 118,748,446.49/12,299.90
  6. Step 6: Final answer
    x = 9,654.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.