Home / 20,440.24-28,207.41-11,487.67

Finding the Fourth Proportional to 20,440.24, 28,207.41 and 11,487.67

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Solution

The fourth proportional to 20,440.24, 28,207.41 and 11,487.67 is: 15,852.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,440.24 : 28,207.41 = 11,487.67 : x
  2. Step 2: Convert to fraction form
    20,440.24/28,207.41 = 11,487.67/x
  3. Step 3: Cross multiply
    20,440.24x = 28,207.41 × 11,487.67
  4. Step 4: Simplify right side
    20,440.24x = 324,037,276.60
  5. Step 5: Solve for x
    x = 324,037,276.60/20,440.24
  6. Step 6: Final answer
    x = 15,852.91

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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.