Home / 20,731.37-28,609.67-11,299.93

Finding the Fourth Proportional to 20,731.37, 28,609.67 and 11,299.93

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Solution

The fourth proportional to 20,731.37, 28,609.67 and 11,299.93 is: 15,594.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731.37 : 28,609.67 = 11,299.93 : x
  2. Step 2: Convert to fraction form
    20,731.37/28,609.67 = 11,299.93/x
  3. Step 3: Cross multiply
    20,731.37x = 28,609.67 × 11,299.93
  4. Step 4: Simplify right side
    20,731.37x = 323,287,225.05
  5. Step 5: Solve for x
    x = 323,287,225.05/20,731.37
  6. Step 6: Final answer
    x = 15,594.11

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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.