Home / 27,206.82-40,822.79-12,420.27

Finding the Fourth Proportional to 27,206.82, 40,822.79 and 12,420.27

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Solution

The fourth proportional to 27,206.82, 40,822.79 and 12,420.27 is: 18,636.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,206.82 : 40,822.79 = 12,420.27 : x
  2. Step 2: Convert to fraction form
    27,206.82/40,822.79 = 12,420.27/x
  3. Step 3: Cross multiply
    27,206.82x = 40,822.79 × 12,420.27
  4. Step 4: Simplify right side
    27,206.82x = 507,030,011.85
  5. Step 5: Solve for x
    x = 507,030,011.85/27,206.82
  6. Step 6: Final answer
    x = 18,636.14

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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.