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Finding the Fourth Proportional to 27,884.61, 38,481.63 and 15,309.63

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Solution

The fourth proportional to 27,884.61, 38,481.63 and 15,309.63 is: 21,127.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,884.61 : 38,481.63 = 15,309.63 : x
  2. Step 2: Convert to fraction form
    27,884.61/38,481.63 = 15,309.63/x
  3. Step 3: Cross multiply
    27,884.61x = 38,481.63 × 15,309.63
  4. Step 4: Simplify right side
    27,884.61x = 589,139,517.10
  5. Step 5: Solve for x
    x = 589,139,517.10/27,884.61
  6. Step 6: Final answer
    x = 21,127.77

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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.