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Finding the Fourth Proportional to 27,959.44, 38,583.48 and 15,384.40

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Solution

The fourth proportional to 27,959.44, 38,583.48 and 15,384.40 is: 21,230.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,959.44 : 38,583.48 = 15,384.40 : x
  2. Step 2: Convert to fraction form
    27,959.44/38,583.48 = 15,384.40/x
  3. Step 3: Cross multiply
    27,959.44x = 38,583.48 × 15,384.40
  4. Step 4: Simplify right side
    27,959.44x = 593,583,689.71
  5. Step 5: Solve for x
    x = 593,583,689.71/27,959.44
  6. Step 6: Final answer
    x = 21,230.17

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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.