Home / 11,533.92-15,920.75-7,171.67

Finding the Fourth Proportional to 11,533.92, 15,920.75 and 7,171.67

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Solution

The fourth proportional to 11,533.92, 15,920.75 and 7,171.67 is: 9,899.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,533.92 : 15,920.75 = 7,171.67 : x
  2. Step 2: Convert to fraction form
    11,533.92/15,920.75 = 7,171.67/x
  3. Step 3: Cross multiply
    11,533.92x = 15,920.75 × 7,171.67
  4. Step 4: Simplify right side
    11,533.92x = 114,178,365.15
  5. Step 5: Solve for x
    x = 114,178,365.15/11,533.92
  6. Step 6: Final answer
    x = 9,899.35

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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.