Home / 15,744.84-21,728.03-8,671.29

Finding the Fourth Proportional to 15,744.84, 21,728.03 and 8,671.29

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Solution

The fourth proportional to 15,744.84, 21,728.03 and 8,671.29 is: 11,966.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,744.84 : 21,728.03 = 8,671.29 : x
  2. Step 2: Convert to fraction form
    15,744.84/21,728.03 = 8,671.29/x
  3. Step 3: Cross multiply
    15,744.84x = 21,728.03 × 8,671.29
  4. Step 4: Simplify right side
    15,744.84x = 188,410,005.90
  5. Step 5: Solve for x
    x = 188,410,005.90/15,744.84
  6. Step 6: Final answer
    x = 11,966.46

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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.