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Finding the Fourth Proportional to 27,141.36, 40,713.12 and 8,423.36

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Solution

The fourth proportional to 27,141.36, 40,713.12 and 8,423.36 is: 12,635.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,141.36 : 40,713.12 = 8,423.36 : x
  2. Step 2: Convert to fraction form
    27,141.36/40,713.12 = 8,423.36/x
  3. Step 3: Cross multiply
    27,141.36x = 40,713.12 × 8,423.36
  4. Step 4: Simplify right side
    27,141.36x = 342,941,266.48
  5. Step 5: Solve for x
    x = 342,941,266.48/27,141.36
  6. Step 6: Final answer
    x = 12,635.38

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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.