Home / 15,744.93-21,728.99-8,671.35

Finding the Fourth Proportional to 15,744.93, 21,728.99 and 8,671.35

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Solution

The fourth proportional to 15,744.93, 21,728.99 and 8,671.35 is: 11,967.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,744.93 : 21,728.99 = 8,671.35 : x
  2. Step 2: Convert to fraction form
    15,744.93/21,728.99 = 8,671.35/x
  3. Step 3: Cross multiply
    15,744.93x = 21,728.99 × 8,671.35
  4. Step 4: Simplify right side
    15,744.93x = 188,419,720.92
  5. Step 5: Solve for x
    x = 188,419,720.92/15,744.93
  6. Step 6: Final answer
    x = 11,967.01

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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.