Home / 18,307.68-27,457.20-8,440.80

Finding the Fourth Proportional to 18,307.68, 27,457.20 and 8,440.80

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Solution

The fourth proportional to 18,307.68, 27,457.20 and 8,440.80 is: 12,659.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,307.68 : 27,457.20 = 8,440.80 : x
  2. Step 2: Convert to fraction form
    18,307.68/27,457.20 = 8,440.80/x
  3. Step 3: Cross multiply
    18,307.68x = 27,457.20 × 8,440.80
  4. Step 4: Simplify right side
    18,307.68x = 231,760,733.76
  5. Step 5: Solve for x
    x = 231,760,733.76/18,307.68
  6. Step 6: Final answer
    x = 12,659.21

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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.