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Finding the Fourth Proportional to 20,495.36, 30,751.56 and 8,652.08

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Solution

The fourth proportional to 20,495.36, 30,751.56 and 8,652.08 is: 12,981.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,495.36 : 30,751.56 = 8,652.08 : x
  2. Step 2: Convert to fraction form
    20,495.36/30,751.56 = 8,652.08/x
  3. Step 3: Cross multiply
    20,495.36x = 30,751.56 × 8,652.08
  4. Step 4: Simplify right side
    20,495.36x = 266,064,957.24
  5. Step 5: Solve for x
    x = 266,064,957.24/20,495.36
  6. Step 6: Final answer
    x = 12,981.72

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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.