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Finding the Fourth Proportional to 27,133.80, 40,668.30 and 13,979.40

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Solution

The fourth proportional to 27,133.80, 40,668.30 and 13,979.40 is: 20,952.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,133.80 : 40,668.30 = 13,979.40 : x
  2. Step 2: Convert to fraction form
    27,133.80/40,668.30 = 13,979.40/x
  3. Step 3: Cross multiply
    27,133.80x = 40,668.30 × 13,979.40
  4. Step 4: Simplify right side
    27,133.80x = 568,518,433.02
  5. Step 5: Solve for x
    x = 568,518,433.02/27,133.80
  6. Step 6: Final answer
    x = 20,952.41

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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.