Home / 27,215.42-40,827.89-12,425.83

Finding the Fourth Proportional to 27,215.42, 40,827.89 and 12,425.83

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Solution

The fourth proportional to 27,215.42, 40,827.89 and 12,425.83 is: 18,640.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,215.42 : 40,827.89 = 12,425.83 : x
  2. Step 2: Convert to fraction form
    27,215.42/40,827.89 = 12,425.83/x
  3. Step 3: Cross multiply
    27,215.42x = 40,827.89 × 12,425.83
  4. Step 4: Simplify right side
    27,215.42x = 507,320,349.39
  5. Step 5: Solve for x
    x = 507,320,349.39/27,215.42
  6. Step 6: Final answer
    x = 18,640.92

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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.