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Finding the Fourth Proportional to 21,495.85, 32,243.78 and 9,012.54

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Solution

The fourth proportional to 21,495.85, 32,243.78 and 9,012.54 is: 13,518.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,495.85 : 32,243.78 = 9,012.54 : x
  2. Step 2: Convert to fraction form
    21,495.85/32,243.78 = 9,012.54/x
  3. Step 3: Cross multiply
    21,495.85x = 32,243.78 × 9,012.54
  4. Step 4: Simplify right side
    21,495.85x = 290,598,357.00
  5. Step 5: Solve for x
    x = 290,598,357.00/21,495.85
  6. Step 6: Final answer
    x = 13,518.81

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1.5x scale

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.