Home / 20,167.40-27,829.76-11,214.58

Finding the Fourth Proportional to 20,167.40, 27,829.76 and 11,214.58

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Solution

The fourth proportional to 20,167.40, 27,829.76 and 11,214.58 is: 15,475.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,167.40 : 27,829.76 = 11,214.58 : x
  2. Step 2: Convert to fraction form
    20,167.40/27,829.76 = 11,214.58/x
  3. Step 3: Cross multiply
    20,167.40x = 27,829.76 × 11,214.58
  4. Step 4: Simplify right side
    20,167.40x = 312,099,069.90
  5. Step 5: Solve for x
    x = 312,099,069.90/20,167.40
  6. Step 6: Final answer
    x = 15,475.42

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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.