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Finding the Fourth Proportional to 18,736.18, 28,110.09 and 11,248.12

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Solution

The fourth proportional to 18,736.18, 28,110.09 and 11,248.12 is: 16,875.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,736.18 : 28,110.09 = 11,248.12 : x
  2. Step 2: Convert to fraction form
    18,736.18/28,110.09 = 11,248.12/x
  3. Step 3: Cross multiply
    18,736.18x = 28,110.09 × 11,248.12
  4. Step 4: Simplify right side
    18,736.18x = 316,185,665.53
  5. Step 5: Solve for x
    x = 316,185,665.53/18,736.18
  6. Step 6: Final answer
    x = 16,875.67

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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.