Home / 30,538.54-42,143.34-17,109.82

Finding the Fourth Proportional to 30,538.54, 42,143.34 and 17,109.82

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Solution

The fourth proportional to 30,538.54, 42,143.34 and 17,109.82 is: 23,611.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,538.54 : 42,143.34 = 17,109.82 : x
  2. Step 2: Convert to fraction form
    30,538.54/42,143.34 = 17,109.82/x
  3. Step 3: Cross multiply
    30,538.54x = 42,143.34 × 17,109.82
  4. Step 4: Simplify right side
    30,538.54x = 721,064,961.60
  5. Step 5: Solve for x
    x = 721,064,961.60/30,538.54
  6. Step 6: Final answer
    x = 23,611.64

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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.