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Finding the Fourth Proportional to 27,959.44, 38,583.84 and 15,384.16

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Solution

The fourth proportional to 27,959.44, 38,583.84 and 15,384.16 is: 21,230.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,959.44 : 38,583.84 = 15,384.16 : x
  2. Step 2: Convert to fraction form
    27,959.44/38,583.84 = 15,384.16/x
  3. Step 3: Cross multiply
    27,959.44x = 38,583.84 × 15,384.16
  4. Step 4: Simplify right side
    27,959.44x = 593,579,967.97
  5. Step 5: Solve for x
    x = 593,579,967.97/27,959.44
  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.