Home / 10,255.25-15,382.85-7,918.67

Finding the Fourth Proportional to 10,255.25, 15,382.85 and 7,918.67

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Solution

The fourth proportional to 10,255.25, 15,382.85 and 7,918.67 is: 11,877.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,255.25 : 15,382.85 = 7,918.67 : x
  2. Step 2: Convert to fraction form
    10,255.25/15,382.85 = 7,918.67/x
  3. Step 3: Cross multiply
    10,255.25x = 15,382.85 × 7,918.67
  4. Step 4: Simplify right side
    10,255.25x = 121,811,596.30
  5. Step 5: Solve for x
    x = 121,811,596.30/10,255.25
  6. Step 6: Final answer
    x = 11,877.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.