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Finding the Fourth Proportional to 10,418.65, 15,628.97 and 2,922.21

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Solution

The fourth proportional to 10,418.65, 15,628.97 and 2,922.21 is: 4,383.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,418.65 : 15,628.97 = 2,922.21 : x
  2. Step 2: Convert to fraction form
    10,418.65/15,628.97 = 2,922.21/x
  3. Step 3: Cross multiply
    10,418.65x = 15,628.97 × 2,922.21
  4. Step 4: Simplify right side
    10,418.65x = 45,671,132.42
  5. Step 5: Solve for x
    x = 45,671,132.42/10,418.65
  6. Step 6: Final answer
    x = 4,383.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.