Home / 12,239.65-16,882.81-8,409.46

Finding the Fourth Proportional to 12,239.65, 16,882.81 and 8,409.46

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Solution

The fourth proportional to 12,239.65, 16,882.81 and 8,409.46 is: 11,599.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,239.65 : 16,882.81 = 8,409.46 : x
  2. Step 2: Convert to fraction form
    12,239.65/16,882.81 = 8,409.46/x
  3. Step 3: Cross multiply
    12,239.65x = 16,882.81 × 8,409.46
  4. Step 4: Simplify right side
    12,239.65x = 141,975,315.38
  5. Step 5: Solve for x
    x = 141,975,315.38/12,239.65
  6. Step 6: Final answer
    x = 11,599.62

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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.