Home / 11,221.47-15,485.51-6,687.27

Finding the Fourth Proportional to 11,221.47, 15,485.51 and 6,687.27

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Solution

The fourth proportional to 11,221.47, 15,485.51 and 6,687.27 is: 9,228.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.47 : 15,485.51 = 6,687.27 : x
  2. Step 2: Convert to fraction form
    11,221.47/15,485.51 = 6,687.27/x
  3. Step 3: Cross multiply
    11,221.47x = 15,485.51 × 6,687.27
  4. Step 4: Simplify right side
    11,221.47x = 103,555,803.18
  5. Step 5: Solve for x
    x = 103,555,803.18/11,221.47
  6. Step 6: Final answer
    x = 9,228.36

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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.