Home / 27,128.35-40,685.23-18,416.89

Finding the Fourth Proportional to 27,128.35, 40,685.23 and 18,416.89

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Solution

The fourth proportional to 27,128.35, 40,685.23 and 18,416.89 is: 27,620.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,128.35 : 40,685.23 = 18,416.89 : x
  2. Step 2: Convert to fraction form
    27,128.35/40,685.23 = 18,416.89/x
  3. Step 3: Cross multiply
    27,128.35x = 40,685.23 × 18,416.89
  4. Step 4: Simplify right side
    27,128.35x = 749,295,405.53
  5. Step 5: Solve for x
    x = 749,295,405.53/27,128.35
  6. Step 6: Final answer
    x = 27,620.38

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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.