Home / 15,151.33-20,907.34-8,436.70

Finding the Fourth Proportional to 15,151.33, 20,907.34 and 8,436.70

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Solution

The fourth proportional to 15,151.33, 20,907.34 and 8,436.70 is: 11,641.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,151.33 : 20,907.34 = 8,436.70 : x
  2. Step 2: Convert to fraction form
    15,151.33/20,907.34 = 8,436.70/x
  3. Step 3: Cross multiply
    15,151.33x = 20,907.34 × 8,436.70
  4. Step 4: Simplify right side
    15,151.33x = 176,388,955.38
  5. Step 5: Solve for x
    x = 176,388,955.38/15,151.33
  6. Step 6: Final answer
    x = 11,641.81

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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.