Home / 11,011.36-15,194.64-8,920.48

Finding the Fourth Proportional to 11,011.36, 15,194.64 and 8,920.48

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Solution

The fourth proportional to 11,011.36, 15,194.64 and 8,920.48 is: 12,309.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,011.36 : 15,194.64 = 8,920.48 : x
  2. Step 2: Convert to fraction form
    11,011.36/15,194.64 = 8,920.48/x
  3. Step 3: Cross multiply
    11,011.36x = 15,194.64 × 8,920.48
  4. Step 4: Simplify right side
    11,011.36x = 135,543,482.23
  5. Step 5: Solve for x
    x = 135,543,482.23/11,011.36
  6. Step 6: Final answer
    x = 12,309.42

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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.