Home / 15,150.72-20,907.94-8,436.43

Finding the Fourth Proportional to 15,150.72, 20,907.94 and 8,436.43

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Solution

The fourth proportional to 15,150.72, 20,907.94 and 8,436.43 is: 11,642.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,150.72 : 20,907.94 = 8,436.43 : x
  2. Step 2: Convert to fraction form
    15,150.72/20,907.94 = 8,436.43/x
  3. Step 3: Cross multiply
    15,150.72x = 20,907.94 × 8,436.43
  4. Step 4: Simplify right side
    15,150.72x = 176,388,225.53
  5. Step 5: Solve for x
    x = 176,388,225.53/15,150.72
  6. Step 6: Final answer
    x = 11,642.23

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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.