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Finding the Fourth Proportional to 11,840.70, 17,775.45 and 8,895.90

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Solution

The fourth proportional to 11,840.70, 17,775.45 and 8,895.90 is: 13,354.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,840.70 : 17,775.45 = 8,895.90 : x
  2. Step 2: Convert to fraction form
    11,840.70/17,775.45 = 8,895.90/x
  3. Step 3: Cross multiply
    11,840.70x = 17,775.45 × 8,895.90
  4. Step 4: Simplify right side
    11,840.70x = 158,128,625.66
  5. Step 5: Solve for x
    x = 158,128,625.66/11,840.70
  6. Step 6: Final answer
    x = 13,354.67

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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.