Home / 27,218.95-40,833.20-12,429.36

Finding the Fourth Proportional to 27,218.95, 40,833.20 and 12,429.36

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Solution

The fourth proportional to 27,218.95, 40,833.20 and 12,429.36 is: 18,646.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,218.95 : 40,833.20 = 12,429.36 : x
  2. Step 2: Convert to fraction form
    27,218.95/40,833.20 = 12,429.36/x
  3. Step 3: Cross multiply
    27,218.95x = 40,833.20 × 12,429.36
  4. Step 4: Simplify right side
    27,218.95x = 507,530,542.75
  5. Step 5: Solve for x
    x = 507,530,542.75/27,218.95
  6. Step 6: Final answer
    x = 18,646.22

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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.