Home / 30,558.26-42,170.64-17,820.20

Finding the Fourth Proportional to 30,558.26, 42,170.64 and 17,820.20

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Solution

The fourth proportional to 30,558.26, 42,170.64 and 17,820.20 is: 24,592.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,558.26 : 42,170.64 = 17,820.20 : x
  2. Step 2: Convert to fraction form
    30,558.26/42,170.64 = 17,820.20/x
  3. Step 3: Cross multiply
    30,558.26x = 42,170.64 × 17,820.20
  4. Step 4: Simplify right side
    30,558.26x = 751,489,238.93
  5. Step 5: Solve for x
    x = 751,489,238.93/30,558.26
  6. Step 6: Final answer
    x = 24,592.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.