Home / 10,953.26-15,120.32-7,991.67

Finding the Fourth Proportional to 10,953.26, 15,120.32 and 7,991.67

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Solution

The fourth proportional to 10,953.26, 15,120.32 and 7,991.67 is: 11,032.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,953.26 : 15,120.32 = 7,991.67 : x
  2. Step 2: Convert to fraction form
    10,953.26/15,120.32 = 7,991.67/x
  3. Step 3: Cross multiply
    10,953.26x = 15,120.32 × 7,991.67
  4. Step 4: Simplify right side
    10,953.26x = 120,836,567.78
  5. Step 5: Solve for x
    x = 120,836,567.78/10,953.26
  6. Step 6: Final answer
    x = 11,032.02

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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.