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Finding the Fourth Proportional to 18,735, 28,106.52 and 9,968.64

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Solution

The fourth proportional to 18,735, 28,106.52 and 9,968.64 is: 14,955.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,735 : 28,106.52 = 9,968.64 : x
  2. Step 2: Convert to fraction form
    18,735/28,106.52 = 9,968.64/x
  3. Step 3: Cross multiply
    18,735x = 28,106.52 × 9,968.64
  4. Step 4: Simplify right side
    18,735x = 280,183,779.53
  5. Step 5: Solve for x
    x = 280,183,779.53/18,735
  6. Step 6: Final answer
    x = 14,955.10

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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.