Home / 31,590.39-43,615.22-19,658.55

Finding the Fourth Proportional to 31,590.39, 43,615.22 and 19,658.55

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Solution

The fourth proportional to 31,590.39, 43,615.22 and 19,658.55 is: 27,141.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,590.39 : 43,615.22 = 19,658.55 : x
  2. Step 2: Convert to fraction form
    31,590.39/43,615.22 = 19,658.55/x
  3. Step 3: Cross multiply
    31,590.39x = 43,615.22 × 19,658.55
  4. Step 4: Simplify right side
    31,590.39x = 857,411,884.84
  5. Step 5: Solve for x
    x = 857,411,884.84/31,590.39
  6. Step 6: Final answer
    x = 27,141.54

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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.