Home / 42,820.44-64,236.82-13,240.86

Finding the Fourth Proportional to 42,820.44, 64,236.82 and 13,240.86

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Solution

The fourth proportional to 42,820.44, 64,236.82 and 13,240.86 is: 19,863.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,820.44 : 64,236.82 = 13,240.86 : x
  2. Step 2: Convert to fraction form
    42,820.44/64,236.82 = 13,240.86/x
  3. Step 3: Cross multiply
    42,820.44x = 64,236.82 × 13,240.86
  4. Step 4: Simplify right side
    42,820.44x = 850,550,740.47
  5. Step 5: Solve for x
    x = 850,550,740.47/42,820.44
  6. Step 6: Final answer
    x = 19,863.19

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1.5x scale

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.