Home / 15,709.14-21,678.62-8,996.99

Finding the Fourth Proportional to 15,709.14, 21,678.62 and 8,996.99

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Solution

The fourth proportional to 15,709.14, 21,678.62 and 8,996.99 is: 12,415.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,709.14 : 21,678.62 = 8,996.99 : x
  2. Step 2: Convert to fraction form
    15,709.14/21,678.62 = 8,996.99/x
  3. Step 3: Cross multiply
    15,709.14x = 21,678.62 × 8,996.99
  4. Step 4: Simplify right side
    15,709.14x = 195,042,336.57
  5. Step 5: Solve for x
    x = 195,042,336.57/15,709.14
  6. Step 6: Final answer
    x = 12,415.85

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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.