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Finding the Fourth Proportional to 18,973, 28,459.50 and 6,652.36

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Solution

The fourth proportional to 18,973, 28,459.50 and 6,652.36 is: 9,978.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,973 : 28,459.50 = 6,652.36 : x
  2. Step 2: Convert to fraction form
    18,973/28,459.50 = 6,652.36/x
  3. Step 3: Cross multiply
    18,973x = 28,459.50 × 6,652.36
  4. Step 4: Simplify right side
    18,973x = 189,322,839.42
  5. Step 5: Solve for x
    x = 189,322,839.42/18,973
  6. Step 6: Final answer
    x = 9,978.54

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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.