Home / 15,579.45-21,498.81-8,504.51

Finding the Fourth Proportional to 15,579.45, 21,498.81 and 8,504.51

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Solution

The fourth proportional to 15,579.45, 21,498.81 and 8,504.51 is: 11,735.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,579.45 : 21,498.81 = 8,504.51 : x
  2. Step 2: Convert to fraction form
    15,579.45/21,498.81 = 8,504.51/x
  3. Step 3: Cross multiply
    15,579.45x = 21,498.81 × 8,504.51
  4. Step 4: Simplify right side
    15,579.45x = 182,836,737.14
  5. Step 5: Solve for x
    x = 182,836,737.14/15,579.45
  6. Step 6: Final answer
    x = 11,735.76

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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.