Home / 13,282.20-18,327.32-7,615.86

Finding the Fourth Proportional to 13,282.20, 18,327.32 and 7,615.86

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Solution

The fourth proportional to 13,282.20, 18,327.32 and 7,615.86 is: 10,508.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,282.20 : 18,327.32 = 7,615.86 : x
  2. Step 2: Convert to fraction form
    13,282.20/18,327.32 = 7,615.86/x
  3. Step 3: Cross multiply
    13,282.20x = 18,327.32 × 7,615.86
  4. Step 4: Simplify right side
    13,282.20x = 139,578,265.22
  5. Step 5: Solve for x
    x = 139,578,265.22/13,282.20
  6. Step 6: Final answer
    x = 10,508.67

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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.