Home / 42,608.21-63,889.93-18,905.49

Finding the Fourth Proportional to 42,608.21, 63,889.93 and 18,905.49

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Solution

The fourth proportional to 42,608.21, 63,889.93 and 18,905.49 is: 28,348.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,608.21 : 63,889.93 = 18,905.49 : x
  2. Step 2: Convert to fraction form
    42,608.21/63,889.93 = 18,905.49/x
  3. Step 3: Cross multiply
    42,608.21x = 63,889.93 × 18,905.49
  4. Step 4: Simplify right side
    42,608.21x = 1,207,870,338.19
  5. Step 5: Solve for x
    x = 1,207,870,338.19/42,608.21
  6. Step 6: Final answer
    x = 28,348.30

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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.