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Finding the Fourth Proportional to 12,652.36, 18,978.80 and 4,341.93

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Solution

The fourth proportional to 12,652.36, 18,978.80 and 4,341.93 is: 6,512.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,652.36 : 18,978.80 = 4,341.93 : x
  2. Step 2: Convert to fraction form
    12,652.36/18,978.80 = 4,341.93/x
  3. Step 3: Cross multiply
    12,652.36x = 18,978.80 × 4,341.93
  4. Step 4: Simplify right side
    12,652.36x = 82,404,528.20
  5. Step 5: Solve for x
    x = 82,404,528.20/12,652.36
  6. Step 6: Final answer
    x = 6,512.98

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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.