Home / 28,668.39-43,005.30-11,139.57

Finding the Fourth Proportional to 28,668.39, 43,005.30 and 11,139.57

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Solution

The fourth proportional to 28,668.39, 43,005.30 and 11,139.57 is: 16,710.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,668.39 : 43,005.30 = 11,139.57 : x
  2. Step 2: Convert to fraction form
    28,668.39/43,005.30 = 11,139.57/x
  3. Step 3: Cross multiply
    28,668.39x = 43,005.30 × 11,139.57
  4. Step 4: Simplify right side
    28,668.39x = 479,060,549.72
  5. Step 5: Solve for x
    x = 479,060,549.72/28,668.39
  6. Step 6: Final answer
    x = 16,710.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.