Home / 11,397.09-15,722.34-7,621.44

Finding the Fourth Proportional to 11,397.09, 15,722.34 and 7,621.44

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Solution

The fourth proportional to 11,397.09, 15,722.34 and 7,621.44 is: 10,513.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,397.09 : 15,722.34 = 7,621.44 : x
  2. Step 2: Convert to fraction form
    11,397.09/15,722.34 = 7,621.44/x
  3. Step 3: Cross multiply
    11,397.09x = 15,722.34 × 7,621.44
  4. Step 4: Simplify right side
    11,397.09x = 119,826,870.97
  5. Step 5: Solve for x
    x = 119,826,870.97/11,397.09
  6. Step 6: Final answer
    x = 10,513.81

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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.