Home / 11,317.05-15,632.76-8,697.21

Finding the Fourth Proportional to 11,317.05, 15,632.76 and 8,697.21

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Solution

The fourth proportional to 11,317.05, 15,632.76 and 8,697.21 is: 12,013.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,317.05 : 15,632.76 = 8,697.21 : x
  2. Step 2: Convert to fraction form
    11,317.05/15,632.76 = 8,697.21/x
  3. Step 3: Cross multiply
    11,317.05x = 15,632.76 × 8,697.21
  4. Step 4: Simplify right side
    11,317.05x = 135,961,370.59
  5. Step 5: Solve for x
    x = 135,961,370.59/11,317.05
  6. Step 6: Final answer
    x = 12,013.85

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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.