Home / 13,299.65-18,350.21-8,578.25

Finding the Fourth Proportional to 13,299.65, 18,350.21 and 8,578.25

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Solution

The fourth proportional to 13,299.65, 18,350.21 and 8,578.25 is: 11,835.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,299.65 : 18,350.21 = 8,578.25 : x
  2. Step 2: Convert to fraction form
    13,299.65/18,350.21 = 8,578.25/x
  3. Step 3: Cross multiply
    13,299.65x = 18,350.21 × 8,578.25
  4. Step 4: Simplify right side
    13,299.65x = 157,412,646.04
  5. Step 5: Solve for x
    x = 157,412,646.04/13,299.65
  6. Step 6: Final answer
    x = 11,835.85

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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.