Home / 30,115.16-41,560.35-18,178.25

Finding the Fourth Proportional to 30,115.16, 41,560.35 and 18,178.25

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Solution

The fourth proportional to 30,115.16, 41,560.35 and 18,178.25 is: 25,086.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,115.16 : 41,560.35 = 18,178.25 : x
  2. Step 2: Convert to fraction form
    30,115.16/41,560.35 = 18,178.25/x
  3. Step 3: Cross multiply
    30,115.16x = 41,560.35 × 18,178.25
  4. Step 4: Simplify right side
    30,115.16x = 755,494,156.42
  5. Step 5: Solve for x
    x = 755,494,156.42/30,115.16
  6. Step 6: Final answer
    x = 25,086.84

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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.