Home / 15,821.92-21,836.21-9,107.49

Finding the Fourth Proportional to 15,821.92, 21,836.21 and 9,107.49

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Solution

The fourth proportional to 15,821.92, 21,836.21 and 9,107.49 is: 12,569.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,821.92 : 21,836.21 = 9,107.49 : x
  2. Step 2: Convert to fraction form
    15,821.92/21,836.21 = 9,107.49/x
  3. Step 3: Cross multiply
    15,821.92x = 21,836.21 × 9,107.49
  4. Step 4: Simplify right side
    15,821.92x = 198,873,064.21
  5. Step 5: Solve for x
    x = 198,873,064.21/15,821.92
  6. Step 6: Final answer
    x = 12,569.46

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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.