Home / 40,618.63-60,905.31-12,530.72

Finding the Fourth Proportional to 40,618.63, 60,905.31 and 12,530.72

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Solution

The fourth proportional to 40,618.63, 60,905.31 and 12,530.72 is: 18,789.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,618.63 : 60,905.31 = 12,530.72 : x
  2. Step 2: Convert to fraction form
    40,618.63/60,905.31 = 12,530.72/x
  3. Step 3: Cross multiply
    40,618.63x = 60,905.31 × 12,530.72
  4. Step 4: Simplify right side
    40,618.63x = 763,187,112.92
  5. Step 5: Solve for x
    x = 763,187,112.92/40,618.63
  6. Step 6: Final answer
    x = 18,789.09

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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.