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Finding the Fourth Proportional to 18,892.20, 26,060.88 and 11,719.64

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Solution

The fourth proportional to 18,892.20, 26,060.88 and 11,719.64 is: 16,166.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,892.20 : 26,060.88 = 11,719.64 : x
  2. Step 2: Convert to fraction form
    18,892.20/26,060.88 = 11,719.64/x
  3. Step 3: Cross multiply
    18,892.20x = 26,060.88 × 11,719.64
  4. Step 4: Simplify right side
    18,892.20x = 305,424,001.38
  5. Step 5: Solve for x
    x = 305,424,001.38/18,892.20
  6. Step 6: Final answer
    x = 16,166.67

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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.