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Finding the Fourth Proportional to 23,438.72, 32,344.08 and 12,828.56

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Solution

The fourth proportional to 23,438.72, 32,344.08 and 12,828.56 is: 17,702.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,438.72 : 32,344.08 = 12,828.56 : x
  2. Step 2: Convert to fraction form
    23,438.72/32,344.08 = 12,828.56/x
  3. Step 3: Cross multiply
    23,438.72x = 32,344.08 × 12,828.56
  4. Step 4: Simplify right side
    23,438.72x = 414,927,970.92
  5. Step 5: Solve for x
    x = 414,927,970.92/23,438.72
  6. Step 6: Final answer
    x = 17,702.67

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.