Home / 20,495.35-28,284.96-15,450.67

Finding the Fourth Proportional to 20,495.35, 28,284.96 and 15,450.67

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Solution

The fourth proportional to 20,495.35, 28,284.96 and 15,450.67 is: 21,322.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,495.35 : 28,284.96 = 15,450.67 : x
  2. Step 2: Convert to fraction form
    20,495.35/28,284.96 = 15,450.67/x
  3. Step 3: Cross multiply
    20,495.35x = 28,284.96 × 15,450.67
  4. Step 4: Simplify right side
    20,495.35x = 437,021,582.92
  5. Step 5: Solve for x
    x = 437,021,582.92/20,495.35
  6. Step 6: Final answer
    x = 21,322.96

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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.