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Finding the Fourth Proportional to 20,762.52, 28,652.12 and 11,810.02

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Solution

The fourth proportional to 20,762.52, 28,652.12 and 11,810.02 is: 16,297.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,762.52 : 28,652.12 = 11,810.02 : x
  2. Step 2: Convert to fraction form
    20,762.52/28,652.12 = 11,810.02/x
  3. Step 3: Cross multiply
    20,762.52x = 28,652.12 × 11,810.02
  4. Step 4: Simplify right side
    20,762.52x = 338,382,110.24
  5. Step 5: Solve for x
    x = 338,382,110.24/20,762.52
  6. Step 6: Final answer
    x = 16,297.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.