Home / 30,536.19-42,145.11-18,270.90

Finding the Fourth Proportional to 30,536.19, 42,145.11 and 18,270.90

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Solution

The fourth proportional to 30,536.19, 42,145.11 and 18,270.90 is: 25,216.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,536.19 : 42,145.11 = 18,270.90 : x
  2. Step 2: Convert to fraction form
    30,536.19/42,145.11 = 18,270.90/x
  3. Step 3: Cross multiply
    30,536.19x = 42,145.11 × 18,270.90
  4. Step 4: Simplify right side
    30,536.19x = 770,029,090.30
  5. Step 5: Solve for x
    x = 770,029,090.30/30,536.19
  6. Step 6: Final answer
    x = 25,216.93

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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.