Home / 30,151.35-41,605.16-18,215.55

Finding the Fourth Proportional to 30,151.35, 41,605.16 and 18,215.55

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Solution

The fourth proportional to 30,151.35, 41,605.16 and 18,215.55 is: 25,135.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,151.35 : 41,605.16 = 18,215.55 : x
  2. Step 2: Convert to fraction form
    30,151.35/41,605.16 = 18,215.55/x
  3. Step 3: Cross multiply
    30,151.35x = 41,605.16 × 18,215.55
  4. Step 4: Simplify right side
    30,151.35x = 757,860,781.16
  5. Step 5: Solve for x
    x = 757,860,781.16/30,151.35
  6. Step 6: Final answer
    x = 25,135.22

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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.