Home / 42,487.48-63,727.10-12,905.56

Finding the Fourth Proportional to 42,487.48, 63,727.10 and 12,905.56

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Solution

The fourth proportional to 42,487.48, 63,727.10 and 12,905.56 is: 19,357.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,487.48 : 63,727.10 = 12,905.56 : x
  2. Step 2: Convert to fraction form
    42,487.48/63,727.10 = 12,905.56/x
  3. Step 3: Cross multiply
    42,487.48x = 63,727.10 × 12,905.56
  4. Step 4: Simplify right side
    42,487.48x = 822,433,912.68
  5. Step 5: Solve for x
    x = 822,433,912.68/42,487.48
  6. Step 6: Final answer
    x = 19,357.09

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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.