Home / 31,668.93-43,708.55-18,237.78

Finding the Fourth Proportional to 31,668.93, 43,708.55 and 18,237.78

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Solution

The fourth proportional to 31,668.93, 43,708.55 and 18,237.78 is: 25,171.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,668.93 : 43,708.55 = 18,237.78 : x
  2. Step 2: Convert to fraction form
    31,668.93/43,708.55 = 18,237.78/x
  3. Step 3: Cross multiply
    31,668.93x = 43,708.55 × 18,237.78
  4. Step 4: Simplify right side
    31,668.93x = 797,146,827.83
  5. Step 5: Solve for x
    x = 797,146,827.83/31,668.93
  6. Step 6: Final answer
    x = 25,171.26

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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.