Home / 31,668.30-43,673.58-28,436.40

Finding the Fourth Proportional to 31,668.30, 43,673.58 and 28,436.40

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Solution

The fourth proportional to 31,668.30, 43,673.58 and 28,436.40 is: 39,216.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,668.30 : 43,673.58 = 28,436.40 : x
  2. Step 2: Convert to fraction form
    31,668.30/43,673.58 = 28,436.40/x
  3. Step 3: Cross multiply
    31,668.30x = 43,673.58 × 28,436.40
  4. Step 4: Simplify right side
    31,668.30x = 1,241,919,390.31
  5. Step 5: Solve for x
    x = 1,241,919,390.31/31,668.30
  6. Step 6: Final answer
    x = 39,216.48

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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.