Home / 11,403.30-15,736.56-6,687.60

Finding the Fourth Proportional to 11,403.30, 15,736.56 and 6,687.60

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Solution

The fourth proportional to 11,403.30, 15,736.56 and 6,687.60 is: 9,228.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,403.30 : 15,736.56 = 6,687.60 : x
  2. Step 2: Convert to fraction form
    11,403.30/15,736.56 = 6,687.60/x
  3. Step 3: Cross multiply
    11,403.30x = 15,736.56 × 6,687.60
  4. Step 4: Simplify right side
    11,403.30x = 105,239,818.66
  5. Step 5: Solve for x
    x = 105,239,818.66/11,403.30
  6. Step 6: Final answer
    x = 9,228.89

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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.