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Finding the Fourth Proportional to 28,999.86, 43,495.65 and 9,275.82

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Solution

The fourth proportional to 28,999.86, 43,495.65 and 9,275.82 is: 13,912.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,999.86 : 43,495.65 = 9,275.82 : x
  2. Step 2: Convert to fraction form
    28,999.86/43,495.65 = 9,275.82/x
  3. Step 3: Cross multiply
    28,999.86x = 43,495.65 × 9,275.82
  4. Step 4: Simplify right side
    28,999.86x = 403,457,820.18
  5. Step 5: Solve for x
    x = 403,457,820.18/28,999.86
  6. Step 6: Final answer
    x = 13,912.41

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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.