Home / 15,449.45-21,320.55-8,735.22

Finding the Fourth Proportional to 15,449.45, 21,320.55 and 8,735.22

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Solution

The fourth proportional to 15,449.45, 21,320.55 and 8,735.22 is: 12,054.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,449.45 : 21,320.55 = 8,735.22 : x
  2. Step 2: Convert to fraction form
    15,449.45/21,320.55 = 8,735.22/x
  3. Step 3: Cross multiply
    15,449.45x = 21,320.55 × 8,735.22
  4. Step 4: Simplify right side
    15,449.45x = 186,239,694.77
  5. Step 5: Solve for x
    x = 186,239,694.77/15,449.45
  6. Step 6: Final answer
    x = 12,054.78

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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.