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Finding the Fourth Proportional to 28,305, 42,457.50 and 9,837

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Solution

The fourth proportional to 28,305, 42,457.50 and 9,837 is: 14,755.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,305 : 42,457.50 = 9,837 : x
  2. Step 2: Convert to fraction form
    28,305/42,457.50 = 9,837/x
  3. Step 3: Cross multiply
    28,305x = 42,457.50 × 9,837
  4. Step 4: Simplify right side
    28,305x = 417,654,427.50
  5. Step 5: Solve for x
    x = 417,654,427.50/28,305
  6. Step 6: Final answer
    x = 14,755.50

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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.