Home / 42,540.85-63,820.37-12,961.05

Finding the Fourth Proportional to 42,540.85, 63,820.37 and 12,961.05

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Solution

The fourth proportional to 42,540.85, 63,820.37 and 12,961.05 is: 19,444.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,540.85 : 63,820.37 = 12,961.05 : x
  2. Step 2: Convert to fraction form
    42,540.85/63,820.37 = 12,961.05/x
  3. Step 3: Cross multiply
    42,540.85x = 63,820.37 × 12,961.05
  4. Step 4: Simplify right side
    42,540.85x = 827,178,622.68
  5. Step 5: Solve for x
    x = 827,178,622.68/42,540.85
  6. Step 6: Final answer
    x = 19,444.34

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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.