Home / 18,161.61-27,225.98-12,617.55

Finding the Fourth Proportional to 18,161.61, 27,225.98 and 12,617.55

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Solution

The fourth proportional to 18,161.61, 27,225.98 and 12,617.55 is: 18,914.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,161.61 : 27,225.98 = 12,617.55 : x
  2. Step 2: Convert to fraction form
    18,161.61/27,225.98 = 12,617.55/x
  3. Step 3: Cross multiply
    18,161.61x = 27,225.98 × 12,617.55
  4. Step 4: Simplify right side
    18,161.61x = 343,525,100.86
  5. Step 5: Solve for x
    x = 343,525,100.86/18,161.61
  6. Step 6: Final answer
    x = 18,914.90

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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.