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Finding the Fourth Proportional to 27,222.28, 40,849.98 and 12,438.28

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Solution

The fourth proportional to 27,222.28, 40,849.98 and 12,438.28 is: 18,664.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,222.28 : 40,849.98 = 12,438.28 : x
  2. Step 2: Convert to fraction form
    27,222.28/40,849.98 = 12,438.28/x
  3. Step 3: Cross multiply
    27,222.28x = 40,849.98 × 12,438.28
  4. Step 4: Simplify right side
    27,222.28x = 508,103,489.23
  5. Step 5: Solve for x
    x = 508,103,489.23/27,222.28
  6. Step 6: Final answer
    x = 18,664.99

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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.