Home / 20,482.37-28,265.22-11,407.67

Finding the Fourth Proportional to 20,482.37, 28,265.22 and 11,407.67

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Solution

The fourth proportional to 20,482.37, 28,265.22 and 11,407.67 is: 15,742.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,482.37 : 28,265.22 = 11,407.67 : x
  2. Step 2: Convert to fraction form
    20,482.37/28,265.22 = 11,407.67/x
  3. Step 3: Cross multiply
    20,482.37x = 28,265.22 × 11,407.67
  4. Step 4: Simplify right side
    20,482.37x = 322,440,245.20
  5. Step 5: Solve for x
    x = 322,440,245.20/20,482.37
  6. Step 6: Final answer
    x = 15,742.33

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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.