Home / 20,911.53-31,327.65-11,537.49

Finding the Fourth Proportional to 20,911.53, 31,327.65 and 11,537.49

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Solution

The fourth proportional to 20,911.53, 31,327.65 and 11,537.49 is: 17,284.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,911.53 : 31,327.65 = 11,537.49 : x
  2. Step 2: Convert to fraction form
    20,911.53/31,327.65 = 11,537.49/x
  3. Step 3: Cross multiply
    20,911.53x = 31,327.65 × 11,537.49
  4. Step 4: Simplify right side
    20,911.53x = 361,442,448.60
  5. Step 5: Solve for x
    x = 361,442,448.60/20,911.53
  6. Step 6: Final answer
    x = 17,284.36

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1.5x scale

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.