Home / 30,144.16-45,217.32-12,589.84

Finding the Fourth Proportional to 30,144.16, 45,217.32 and 12,589.84

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Solution

The fourth proportional to 30,144.16, 45,217.32 and 12,589.84 is: 18,885.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,144.16 : 45,217.32 = 12,589.84 : x
  2. Step 2: Convert to fraction form
    30,144.16/45,217.32 = 12,589.84/x
  3. Step 3: Cross multiply
    30,144.16x = 45,217.32 × 12,589.84
  4. Step 4: Simplify right side
    30,144.16x = 569,278,824.03
  5. Step 5: Solve for x
    x = 569,278,824.03/30,144.16
  6. Step 6: Final answer
    x = 18,885.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.