Home / 20,461.46-28,235.81-11,509.81

Finding the Fourth Proportional to 20,461.46, 28,235.81 and 11,509.81

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Solution

The fourth proportional to 20,461.46, 28,235.81 and 11,509.81 is: 15,882.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,461.46 : 28,235.81 = 11,509.81 : x
  2. Step 2: Convert to fraction form
    20,461.46/28,235.81 = 11,509.81/x
  3. Step 3: Cross multiply
    20,461.46x = 28,235.81 × 11,509.81
  4. Step 4: Simplify right side
    20,461.46x = 324,988,766.48
  5. Step 5: Solve for x
    x = 324,988,766.48/20,461.46
  6. Step 6: Final answer
    x = 15,882.97

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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.