Home / 31,067.51-42,873.08-16,920.45

Finding the Fourth Proportional to 31,067.51, 42,873.08 and 16,920.45

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Solution

The fourth proportional to 31,067.51, 42,873.08 and 16,920.45 is: 23,350.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,067.51 : 42,873.08 = 16,920.45 : x
  2. Step 2: Convert to fraction form
    31,067.51/42,873.08 = 16,920.45/x
  3. Step 3: Cross multiply
    31,067.51x = 42,873.08 × 16,920.45
  4. Step 4: Simplify right side
    31,067.51x = 725,431,721.88
  5. Step 5: Solve for x
    x = 725,431,721.88/31,067.51
  6. Step 6: Final answer
    x = 23,350.18

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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.