Home / 13,615.08-20,431.32-8,688.24

Finding the Fourth Proportional to 13,615.08, 20,431.32 and 8,688.24

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Solution

The fourth proportional to 13,615.08, 20,431.32 and 8,688.24 is: 13,037.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.08 : 20,431.32 = 8,688.24 : x
  2. Step 2: Convert to fraction form
    13,615.08/20,431.32 = 8,688.24/x
  3. Step 3: Cross multiply
    13,615.08x = 20,431.32 × 8,688.24
  4. Step 4: Simplify right side
    13,615.08x = 177,512,211.68
  5. Step 5: Solve for x
    x = 177,512,211.68/13,615.08
  6. Step 6: Final answer
    x = 13,037.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.