Home / 20,453.79-28,228.73-11,501.67

Finding the Fourth Proportional to 20,453.79, 28,228.73 and 11,501.67

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Solution

The fourth proportional to 20,453.79, 28,228.73 and 11,501.67 is: 15,873.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,453.79 : 28,228.73 = 11,501.67 : x
  2. Step 2: Convert to fraction form
    20,453.79/28,228.73 = 11,501.67/x
  3. Step 3: Cross multiply
    20,453.79x = 28,228.73 × 11,501.67
  4. Step 4: Simplify right side
    20,453.79x = 324,677,479.47
  5. Step 5: Solve for x
    x = 324,677,479.47/20,453.79
  6. Step 6: Final answer
    x = 15,873.71

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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.