Home / 27,621.84-38,122.16-15,682.72

Finding the Fourth Proportional to 27,621.84, 38,122.16 and 15,682.72

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Solution

The fourth proportional to 27,621.84, 38,122.16 and 15,682.72 is: 21,644.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,621.84 : 38,122.16 = 15,682.72 : x
  2. Step 2: Convert to fraction form
    27,621.84/38,122.16 = 15,682.72/x
  3. Step 3: Cross multiply
    27,621.84x = 38,122.16 × 15,682.72
  4. Step 4: Simplify right side
    27,621.84x = 597,859,161.08
  5. Step 5: Solve for x
    x = 597,859,161.08/27,621.84
  6. Step 6: Final answer
    x = 21,644.44

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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.