Home / 31,290.39-43,179.83-17,142.93

Finding the Fourth Proportional to 31,290.39, 43,179.83 and 17,142.93

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Solution

The fourth proportional to 31,290.39, 43,179.83 and 17,142.93 is: 23,656.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,290.39 : 43,179.83 = 17,142.93 : x
  2. Step 2: Convert to fraction form
    31,290.39/43,179.83 = 17,142.93/x
  3. Step 3: Cross multiply
    31,290.39x = 43,179.83 × 17,142.93
  4. Step 4: Simplify right side
    31,290.39x = 740,228,717.39
  5. Step 5: Solve for x
    x = 740,228,717.39/31,290.39
  6. Step 6: Final answer
    x = 23,656.74

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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.