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Finding the Fourth Proportional to 27,959.72, 38,583.52 and 15,384.44

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Solution

The fourth proportional to 27,959.72, 38,583.52 and 15,384.44 is: 21,230.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,959.72 : 38,583.52 = 15,384.44 : x
  2. Step 2: Convert to fraction form
    27,959.72/38,583.52 = 15,384.44/x
  3. Step 3: Cross multiply
    27,959.72x = 38,583.52 × 15,384.44
  4. Step 4: Simplify right side
    27,959.72x = 593,585,848.43
  5. Step 5: Solve for x
    x = 593,585,848.43/27,959.72
  6. Step 6: Final answer
    x = 21,230.04

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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.