Home / 31,578.05-43,582.46-19,645.20

Finding the Fourth Proportional to 31,578.05, 43,582.46 and 19,645.20

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Solution

The fourth proportional to 31,578.05, 43,582.46 and 19,645.20 is: 27,113.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,578.05 : 43,582.46 = 19,645.20 : x
  2. Step 2: Convert to fraction form
    31,578.05/43,582.46 = 19,645.20/x
  3. Step 3: Cross multiply
    31,578.05x = 43,582.46 × 19,645.20
  4. Step 4: Simplify right side
    31,578.05x = 856,186,044.97
  5. Step 5: Solve for x
    x = 856,186,044.97/31,578.05
  6. Step 6: Final answer
    x = 27,113.33

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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.