Home / 13,124.79-18,108.23-11,861.80

Finding the Fourth Proportional to 13,124.79, 18,108.23 and 11,861.80

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Solution

The fourth proportional to 13,124.79, 18,108.23 and 11,861.80 is: 16,365.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,124.79 : 18,108.23 = 11,861.80 : x
  2. Step 2: Convert to fraction form
    13,124.79/18,108.23 = 11,861.80/x
  3. Step 3: Cross multiply
    13,124.79x = 18,108.23 × 11,861.80
  4. Step 4: Simplify right side
    13,124.79x = 214,796,098.03
  5. Step 5: Solve for x
    x = 214,796,098.03/13,124.79
  6. Step 6: Final answer
    x = 16,365.68

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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.