Home / 11,390.60-17,085.90-6,141.80

Finding the Fourth Proportional to 11,390.60, 17,085.90 and 6,141.80

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Solution

The fourth proportional to 11,390.60, 17,085.90 and 6,141.80 is: 9,212.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,390.60 : 17,085.90 = 6,141.80 : x
  2. Step 2: Convert to fraction form
    11,390.60/17,085.90 = 6,141.80/x
  3. Step 3: Cross multiply
    11,390.60x = 17,085.90 × 6,141.80
  4. Step 4: Simplify right side
    11,390.60x = 104,938,180.62
  5. Step 5: Solve for x
    x = 104,938,180.62/11,390.60
  6. Step 6: Final answer
    x = 9,212.70

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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.