Home / 28,640.06-42,909.26-11,963.39

Finding the Fourth Proportional to 28,640.06, 42,909.26 and 11,963.39

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Solution

The fourth proportional to 28,640.06, 42,909.26 and 11,963.39 is: 17,923.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,640.06 : 42,909.26 = 11,963.39 : x
  2. Step 2: Convert to fraction form
    28,640.06/42,909.26 = 11,963.39/x
  3. Step 3: Cross multiply
    28,640.06x = 42,909.26 × 11,963.39
  4. Step 4: Simplify right side
    28,640.06x = 513,339,937.63
  5. Step 5: Solve for x
    x = 513,339,937.63/28,640.06
  6. Step 6: Final answer
    x = 17,923.85

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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.