Home / 30,156.55-41,615.05-18,217.81

Finding the Fourth Proportional to 30,156.55, 41,615.05 and 18,217.81

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Solution

The fourth proportional to 30,156.55, 41,615.05 and 18,217.81 is: 25,139.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,156.55 : 41,615.05 = 18,217.81 : x
  2. Step 2: Convert to fraction form
    30,156.55/41,615.05 = 18,217.81/x
  3. Step 3: Cross multiply
    30,156.55x = 41,615.05 × 18,217.81
  4. Step 4: Simplify right side
    30,156.55x = 758,135,074.04
  5. Step 5: Solve for x
    x = 758,135,074.04/30,156.55
  6. Step 6: Final answer
    x = 25,139.98

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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.