Home / 11,390.40-17,085.60-7,453.80

Finding the Fourth Proportional to 11,390.40, 17,085.60 and 7,453.80

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Solution

The fourth proportional to 11,390.40, 17,085.60 and 7,453.80 is: 11,180.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.40 : 17,085.60 = 7,453.80 : x
  2. Step 2: Convert to fraction form
    11,390.40/17,085.60 = 7,453.80/x
  3. Step 3: Cross multiply
    11,390.40x = 17,085.60 × 7,453.80
  4. Step 4: Simplify right side
    11,390.40x = 127,352,645.28
  5. Step 5: Solve for x
    x = 127,352,645.28/11,390.40
  6. Step 6: Final answer
    x = 11,180.70

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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.