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Finding the Fourth Proportional to 27,339.52, 37,730.28 and 20,613.28

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Solution

The fourth proportional to 27,339.52, 37,730.28 and 20,613.28 is: 28,447.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,339.52 : 37,730.28 = 20,613.28 : x
  2. Step 2: Convert to fraction form
    27,339.52/37,730.28 = 20,613.28/x
  3. Step 3: Cross multiply
    27,339.52x = 37,730.28 × 20,613.28
  4. Step 4: Simplify right side
    27,339.52x = 777,744,826.12
  5. Step 5: Solve for x
    x = 777,744,826.12/27,339.52
  6. Step 6: Final answer
    x = 28,447.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.