Home / 30,154.21-41,607.43-18,209.55

Finding the Fourth Proportional to 30,154.21, 41,607.43 and 18,209.55

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Solution

The fourth proportional to 30,154.21, 41,607.43 and 18,209.55 is: 25,125.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,154.21 : 41,607.43 = 18,209.55 : x
  2. Step 2: Convert to fraction form
    30,154.21/41,607.43 = 18,209.55/x
  3. Step 3: Cross multiply
    30,154.21x = 41,607.43 × 18,209.55
  4. Step 4: Simplify right side
    30,154.21x = 757,652,576.96
  5. Step 5: Solve for x
    x = 757,652,576.96/30,154.21
  6. Step 6: Final answer
    x = 25,125.93

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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.