Home / 20,634.37-28,501.20-15,911.67

Finding the Fourth Proportional to 20,634.37, 28,501.20 and 15,911.67

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Solution

The fourth proportional to 20,634.37, 28,501.20 and 15,911.67 is: 21,977.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,634.37 : 28,501.20 = 15,911.67 : x
  2. Step 2: Convert to fraction form
    20,634.37/28,501.20 = 15,911.67/x
  3. Step 3: Cross multiply
    20,634.37x = 28,501.20 × 15,911.67
  4. Step 4: Simplify right side
    20,634.37x = 453,501,522.46
  5. Step 5: Solve for x
    x = 453,501,522.46/20,634.37
  6. Step 6: Final answer
    x = 21,977.97

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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.