Home / 20,391.48-30,567.60-11,151

Finding the Fourth Proportional to 20,391.48, 30,567.60 and 11,151

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Solution

The fourth proportional to 20,391.48, 30,567.60 and 11,151 is: 16,715.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391.48 : 30,567.60 = 11,151 : x
  2. Step 2: Convert to fraction form
    20,391.48/30,567.60 = 11,151/x
  3. Step 3: Cross multiply
    20,391.48x = 30,567.60 × 11,151
  4. Step 4: Simplify right side
    20,391.48x = 340,859,307.60
  5. Step 5: Solve for x
    x = 340,859,307.60/20,391.48
  6. Step 6: Final answer
    x = 16,715.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.