Home / 15,568.05-21,488.49-8,857.43

Finding the Fourth Proportional to 15,568.05, 21,488.49 and 8,857.43

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Solution

The fourth proportional to 15,568.05, 21,488.49 and 8,857.43 is: 12,225.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,568.05 : 21,488.49 = 8,857.43 : x
  2. Step 2: Convert to fraction form
    15,568.05/21,488.49 = 8,857.43/x
  3. Step 3: Cross multiply
    15,568.05x = 21,488.49 × 8,857.43
  4. Step 4: Simplify right side
    15,568.05x = 190,332,795.98
  5. Step 5: Solve for x
    x = 190,332,795.98/15,568.05
  6. Step 6: Final answer
    x = 12,225.86

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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.