Home / 11,104.60-15,313.86-7,122.60

Finding the Fourth Proportional to 11,104.60, 15,313.86 and 7,122.60

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Solution

The fourth proportional to 11,104.60, 15,313.86 and 7,122.60 is: 9,822.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,104.60 : 15,313.86 = 7,122.60 : x
  2. Step 2: Convert to fraction form
    11,104.60/15,313.86 = 7,122.60/x
  3. Step 3: Cross multiply
    11,104.60x = 15,313.86 × 7,122.60
  4. Step 4: Simplify right side
    11,104.60x = 109,074,499.24
  5. Step 5: Solve for x
    x = 109,074,499.24/11,104.60
  6. Step 6: Final answer
    x = 9,822.46

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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.